P. Żukowski

We have studied the interconnection between structure (grain sizes, chemical and phase composition, porosity) and some electric properties (resistivity, Hall and Seebeck coefficients, as well as power factor, concentration and mobilities of carriers) in composite ceramics (ZnO)z[(TM)xOy]1-z (TM = Fe and Co – transition metals, 0 ≤ x ≤ 3; 1 ≤ y ≤ 4,...

Currently, special attention is paid to the search for new ceramic materials based on wide-gap oxides, as well as to the study of their structure and properties with a view to their application in various areas of electronic and optoelectronic industry. Conventional double-step ceramic technology has been used to obtain samples in this experiment....

The paper investigated the influence of temperature on the frequency dependence of the conductivity of cellulose-ester insulation of power transformers containing nano-drops of water. It was observed that in the insulation containing nano-drops of water on the σ(f) dependence two sections of conductivity increase occur. It was found that the state...

The study presents frequency dependences of real part of admittance Z′ (f) and phase shift angle θ(T, f) in nanogranular films containing CoFeZr nanoparticles with “core-shell” structure embedded into SiO2 matrix. The 3 μm thicknesses (Co41Fe49Zr10)x(SiO2)100-x films with 20 ≤ x ≤ 80 at.% were deposited in vacuum chamber evacuated either with pure...

This paper presents the frequency and temperature dependences of the phase shift angle, the active part of the admittance, the capacitance, and the dielectric loss factor tanδ for as-deposited and annealed (FeCoZr)x(CaF2)(100-x) nanocomposite films prepared via ion-beam sputtering of a complicated target in a mixed argon–oxygen gas atmosphere. For...

The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, for example method of recovery voltage method, method of polarization and depolarization currents and chromatographic analysis. The second part of paper deals use of method of frequency domain s...

The paper presents a model of hopping conductivity at direct and alternating current, developed on the basis of the quantum phenomenon of electron tunnelling between neighbouring potential wells. The tunnelling takes place between neutral potential wells, resulting in an electrical dipole and additional thermally activated polarisation. An importan...

Combined multilayered coatings based on alternative triple nitride and binary metallic layers were deposited using vacuum-arc evaporation of a cathode. (TiMo)N/TiMo, (CrMo)N/CrMo, (CrZr)N/CrZr, (TiCr)N/TiCr and (MoZr)N/MoZr multilayer coatings were fabricated under the same deposition conditions, while bias potential was −200 V. Total thickness of...

This work is focused on the analysis of phase structure and temperature dependences of electric resistivity ρ(Т) in ZnO-based composite ceramics (ZnO)90(FexOy)10, doped with Fe by the addition of 10 wt.% of one of the iron oxides FexOy.

Raman spectroscopy was used to study the structural properties of graphene synthesized by chemical vapor deposition using decane (C10H22) as a precursor at various hydrogen concentrations. Reduction of the carrier gas flow rate from 150 cm3/min to zero changes the average spacing between the defects from 53 to 212 nm and the average grain size from...

Multilayered TiN/ZrN coatings were deposited using sequential vacuum-arc deposition of Ti and Zr targets in a nitrogen atmosphere. Studies of film's properties were done using various modern methods of analysis, such as XRD, STEM, HRTEM, SIMS. Several samples were annealed in air at the temperature 700°C. All deposited samples were highly polycryst...

Ferromagnetic resonance (FMR) spectroscopy is applied for comparative analysis of granular (CoFeZ)x(Al2O3)100−x, (31 at%≤x≤47 at%) films containing pure FeCo-based nanoparticles (NPs) or “FeCo-based core – oxide shell” NPs inside Al2O3 matrix when deposited in oxygen-free or oxygen-containing atmosphere, correspondingly. It is established that g-fa...

The paper presents an analysis of test results by Frequency Domain Spectroscopy (FDS) of the loss tangent (tg delta) in electrotechnical pressboard impregnated with insulating oil and containing nanoparticles of water depending on the frequency of alternating current, sample temperature and degree of moisture. We found tg delta reduction in areas o...

This study examines the frequency and temperature dependence of conductivity, phase shift angle and capacity of the (FeCoZr)x (CaF2)(100−x) nanocomposites, with the metal phase content in the range of 45 at.% < x < 90 at.%, produced by pure argon ion-beam sputtering. It was found that for the metallic phase content lower than 67 at.% there are temp...

Seebeck coefficient values measured for textured polycrystalline Bi films have been compared with numerically computed ones. The proposed computation procedure requires crystallographic texture mapping and values of single-crystalline transport coefficients as input data. The comparison of computed and measured Seebeck coefficients allowed determin...

The paper established that, the hopping mechanism of the charge exchange for the (FeCoZr)64.4(PZT)35.6 nanocomposite and the additional polarization of tested sample occurs. As frequency increases two frequency areas where capacitance decreases can be observed. Correlation between the conductivity increase and the capacitance decrease has been obse...

The paper presents results of testing permittivity of an oil-impregnated electric pressboard containing water nanoparticles depending on AC frequency, moisture content level and the temperature of samples. A new method has been developed for converting experimentally obtained frequency dependences of permittivity determined with the frequency-domai...

It has been established that in the nanocomposite Cux(SiO2)(100-x) with the metallic phase content x = 27.27 at.% the following phenomena occur: hopping conductivity, additional polarity and coilless-like inductance. Coilless-like inductance phenomenon consists in the occurrence of positive values of phase shift in the high frequency area. Activati...

This study describes the application of electrospray ionization mass spectrometry in order to identify ten antibiotics (macrolides, penicillins, aminoglycosides). An optimum procedure was developed for determination of antibiotics of different grade. Positive ion spectra of most antibiotics are higher in intensity including an [M+H](+) ion and prod...

Tin dioxide films with variable stoichiometric composition were fabricated by means of dc magnetron sputtering followed by a 2-stage annealing process. The structural and electrical properties of tin dioxide films were investigated by means of the Raman spectroscopy and impedance spectroscopy, respectively. It was found that crystallinity and grain...

The paper presents the results of investigation of element composition of CuInSe2 (CIS) compounds obtained by vertical Bridgman technique and on a glass substrate by the thermal deposition of Cu-In thin films with the subsequent annealing in selenium vapour. The depth profile distribution of elements in these samples using the Rutherford backscatte...

Using the vacuum-arc evaporation method we fabricated periodic multilayered TiN/MoN structures with different bilayer periods λ ranging from 8 to 100 nm. We found that molybdenum nitride and titanium nitride layers grown on steel show local partial epitaxy and columnar growth across interfaces. A molybdenum-titanium carbide interlayer was evidenced...

This work presents the results of (Zr-Ti-Cr-Nb)N superhard coatings research. The samples were fabricated by the vacuum-arc deposition method (Arc-PVD). Structure, composition and properties of these coatings were studied. The study of coatings was carried out using scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction...

In this work anisotropic magnetoresistance in nanogranular Ni films and Ni nanorods on Si(100) wafer substrates was studied in wide ranges of temperature and magnetic field. To produce Ni films and nanorods we used electrochemical deposition of Ni clusters either directly on the Si substrate or into pores in SiO2 layer on the Si substrate. To produ...

This paper presents the investigations of the electrical properties of the (CoFeZr)(x)(PZT)(1-x) nanocomposite with the metallic phase content x = 43.8 at.%, which was produced by ion beam sputtering. Such preparation took place under an argon atmosphere with low oxygen content with its partial pressure P-O2 = 2 x 10(-3) Pa. The measurements were p...

In this paper the results of investigations of electrical properties of metal-dielectric nanocomposites ( FeCoZr)(x)(CaF2)(100-x) are presented. The samples with the metallic phase content x = 4 5 : 7 at.% were produced by ion-beam sputtering method in pure argon atmosphere, and subsequently annealed at 398 K for 15 min. The measurements of electri...

In this paper the results of examinations of nanocomposites Cu-x(SiOy)(100-x) produced by ion beam sputtering using argon ions were presented. The examinations were performed by the use of ac devices for measuring frequency in the range 50 Hz-1 MHz and temperatures from 81 K to 273 K. The measurements were performed for the samples directly after p...

Self-ordered arrays of Ni, Ni(50)Pd(50), and Ni(78)Pd(22) nanowires were synthesized by simultaneous electrochemical deposition of Ni and Pd components into porous templates of anodic aluminum oxide using alternating current. This paper is focused on the interplay of structure and chemical composition of Ni and Ni–Pd bicomponent nanowires arrays an...

The paper presents research results of testing AC conductivity in a moist oilimpregnated electric insulation pressboard, depending on the moisture content level and temperature of the samples. A new method has been elaborated for converting experimentally obtained dependences from frequency-domain spectroscopy (FDS) to the reference temperature of...

The paper presents investigations of frequency and temperature dependences on capacitance, phase shift and loss tangent of nanocomposites (FeCoZr)x(CaF2)(100−x) of the metallic phase content x = 66.3 at.%. The sample was subjected to 15 min annealing at temperature 723 K. It has been established that within the range of 50 Hz–5 × 104 Hz the frequen...

In this work, the temperature and frequency dependences of the real part of the admittance [σ(f, T)] of annealed nanocomposite films containing Co45 Fe45Zr10-based nanoparticles covered with native oxides and embedded in a doped PbZrTiO3 ferroelectric matrix were studied. The nanocomposites studied were deposited by ion sputtering a complex target...

The paper presents results of testing electric properties (resistance, capacity and phase angle in an equivalent parallel circuit) of ferromagnetic alloy-dielectric nanocomposites (FeCoZr)x(PZT)(100−x) produced by ion-beam sputtering in vacuum conditions. The measurements have been performed using alternating current within the frequency range of 5...

This presented work investigates the structure and temperature relationship/dependence of the DC conductivity in the (Fe0.45Co0.45Zr0.10)x(Al2O3)1−x nanocomposites deposited in Ar atmosphere with composition ( at.%) and temperature ( K). It is shown that VRH displayed crossover from Mott-like to Shklovskii-Efros regimes which occurred at temperatur...

The paper presents frequency f and temperature T dependences of the phase angle θ, conductivity σ, capacity Cp and tgδ for (FeCoZr)x(CaF2)(100−x) nanocomposite films deposited with the application of ion-beam sputtering of a complex target in the gas atmosphere of mixed argon and oxygen. The examined films are composed of metallic FeCoZr “cores” co...

This article presents results on the DC conductivity of moist pressboard impregnated with insulating oil and its dependence on the moisture and temperature of the samples. The transfer of charges was found to take place because of electron hopping between potential wells produced by water nanodrops. The average dimension of the nanodrops was around...

Nanofibers from chitosan were obtained by the NANOSPIDER technology. The structure of the nanofiber layer was analyzed by the method of scanning microscopy on a JSM-5610 LV JEOL. It is found that the most reasonable concentration of chitosan (in the test interval) is 2.0 wt.%. In this case, the process is stable, and nanofibers are formed with a di...

Two different procedures of carbon nanotube film fabrication are discussed. The size, structural, and optical characteristics as well as electrophysical properties of initial nanotubes and the prepared buckypaper are studied. A nature of the observed temperature activated charge transport is discussed. Surprisingly, these data shows a fairly good a...

Investigation of electrical resistivity ρ and magnetoresistance in single crystalline n-type silicon heavily doped with antimony in the temperature range ∆T = 5−300 K and at the magnetic inductance B up to 8 T was performed. It was established that, for the temperature range ∆T = 25−300 K the conductivity is of activation type, while for ∆T = 5−25...

In this paper a composite structure, topography, wettability and nanohardness of a (100) Si surface modified by means of ion-assisted deposition of metal (Me) coatings in conditions of a self-irradiation are discussed.

The composition of Zr-based thin films on rubber was investigated by utilizing the Rutherford backscattering technique and RUMP code simulation. The level of adhesion between the coating fabricated on rubber by means of self-ion assisted deposition was measured using Pin Pull Test. The coating deposited on the rubber consists of Zr, O, C, H. The se...

We describe here structure and temperature dependences of conductivity σ(T), the Seebeck coefficient α(T), thermal conductivity λ(T) and figure-of-merit ZT(T) in Ca3Co4O9 ceramics, doped with Fe and Y, depending on compacting pressure (0.2 or 6 MPa) and temperature (300 < T < 700 K). It is shown that introduction of iron and yttrium to ceramics doe...

Compound semiconductor nanocrystals (InAs, InSb, GaSb) were successfully synthesized in single crystalline Si by high fluence ion implantation at 500°C followed by high-temperature rapid thermal annealing or conventional furnace annealing at 900-1100°C. Rutherford backscattering spectrometry, transmission electron microscopy/transmission electron d...

This paper studies the temperature dependences (2 < T < 300 K) of the DC conductivity σ(T ) for the (Co0.45Fe0.45Zr0.10)x(Al2O3)1-x nanocomposites (30 < x < 65 at.%) sputtered in Ar + O2 atmosphere. It is shown that at temperatures lower than 100-150 K dependences of DC conductance on temperature for all the studied samples are due to the Shklovski...

In doped TlGaSe2 crystals the phase transitions at low temperatures (100-170 K) were observed using admittance and dielectric spectroscopy in a temperature range of 80-320 K. The admittance and permittivity measurements in the studied samples indicated that after Fe or Tb doping by impurities with concentrations Nimp < 0.5 at.% nonequilibrium elect...

The subjects of investigation are thin semiconductor SnOx films received by thermal oxidation. The influence of gas environments on electrical conductivity of films were investigated by a static way by measurement of kinetic and equilibrium isotherm of adsorption of trimethylamine, alcohol, hydrogen sulfide and ammonia. The communication between a...

PbSnS thin films were prepared by hot-wall vacuum evaporation. The Rutherford backscattering technique was employed for the investigation of PbxSn1-xS thin films composition. With a help of atomic force microscopy the main stages in the development of the thin films were characterized. Contact angle measurements of water drop on PbxSn1-xS thin film...

The article presents the results of research based on the DC electrical conductivity of wet paper depending on the moisture content and temperature of the samples. The change of moisture content does not change the activation energy of conductivity. The conductivity is performed by the hopping mechanism between the nearest possible holes which are...

In paragraph are presented the results of research based on the AC conductivity of the wet oil-impregnated insulating paper, depending on the moisture content and temperature of the samples. This is a new experimental method, which converts the results from the FDS to the reference temperature of 293.15 K (20 ° C). Takes account of the activation e...

The present paper investigates dependencies of DC/AC conductances on metallic-to-dielectric phase ratio x, temperature T and frequency f in granular nanocomposite films containing FeCoZr nanoparticles embedded into oxygen-free CaF2 matrix. The specific admittance/conductance dependences on x/T/f for the studied films around the percolation configur...

The paper reports on a comparative study of local Fe states, phase composition and magnetoresistivity of granular nanocomposite films FeCoZr-CaF2 sintered in pure Ar and Ar + O sputtering atmosphere. For the first time peculiarities of temperature and magnetic field dependencies of magnetoresistance are analyzed with respect to partial oxidation of...

Paper deals with the analysis of thermal processes in oil power distribution transformers. By means of the mathematical analysis and experimental measurements it is possible to diagnose of distribution oil transformers in terms of mechanical strength of winding. Analysis of warming at varying loads is very importance, since allows determining the l...

In that report we observe the initial stages in the process of film growth at different irradiation doses. Investigations of influence of Mo deposition on glass substrates by means of self-ion-assisted deposition on its topography (atomic force microscopy) and wettability (sessile-drop method) were carried out. It was found out that with an increas...

The general goal of this work is to investigate the defects formed on the surface of the Cz-Si wafers subjected to helium implantation, vacuum annealing and nitrogen plasma treatment. The performed scanning electron microscopy study has shown that in the general case two types of surface defects can be formed: cone-shaped inclusions with the base d...

The article presents the experimental results on electric conductivity investigations of gallium arsenide, exposed to polyenergy implantations with H + ions, depending on alternating current frequency (50 Hz ÷ 5 MHz), testing temperature (liquid nitrogen temperature ÷373 K) and the temperature of 15 min isochronous annealing (293 ÷ 663 K). It has b...

The main goal of this work is to establish the influence of annealing on the properties of Cz-Si wafers previously subjected to the hydrogen ion-beam treatment at 25 or 300-350 °C. It is demonstrated by the conducted study that, despite similarity in the effects of the hydrogen ion-beam treatment at different temperatures on some electrical propert...

CoFeZr–Al2O3 nanocomposite films of 3–5 μm thickness, containing metallic alloy nanoparticles embedded into the dielectric alumina matrix, have been deposited on a glass ceramic substrate using magnetron sputtering of composite target in Ar gas ambient. Measurements of AC conductance and lagging have been performed within the frequency range of 50...

Standard 4.5Ωcm n-type and 12Ωcm p-type Cz Si wafers were implanted with helium ions of 300keV energy and the fluences of 1×1015, 5×1015, 1×1016 or 2×1016at/cm2 at room temperature. The implanted wafers were then annealed in vacuum at 650, 700, 750 or 800°C. Then oxygen or nitrogen ions of the fluence of 2×1017cm−2 were introduced to the silicon wa...

One-component and multicomponent compound coatings were deposited on substrates of copper and silicon by the method of ion-beam assisted deposition. Atomic species sputtered from the inner surface of hollow truncated cones of different compositions were deposited on these substrates. AES and RBS were used to determine depth distributions of deposit...

Testing of electrical properties of nanocomposites (Co0,45Fe0,45Zr0,1)x + (Al2O3)1+x within the concentration range of 0.30 < x < 0.65, produced by means of magnetron sputtering of a target composed of stripes of metallic alloy and dielectric, has been carried out. It has been found that the studied materials contain metallic nanoparticles of a dia...

Standard 20 Ωcm boron doped Cz Si wafers were subjected to 100 keV hydrogen ion implantation at room temperature to fluences of 1 × 1016 or 4 × 1016 at/cm2. Subsequently, nitrogen was incorporated in silicon from a DC plasma source at a temperature of 300 °C. Finally, all samples were annealed at 700 °C for 2 h in vacuum. Structural properties of s...

The paper presents a conductivity model of a hopping transfer of charges located in potential wells in the case of an alternating current field.

The paper presents the results of measurement of the influence of the thermal's annealed on the hopping conductivity In the (CoFeZr)x + (Al2O3)1-X nanocomposites. The measurements were done In the frequency range from 50 Hz do 1 MHz for the 60 temperatures from range 77Kdo 303 K.

The paper presents results of experimental verification of a hopping conductivity model using direct and alternating current. Considerable consistency of computer simulation results with experimental data concerning frequency dependences of conductivity and the frequency coefficient α of the formula for nanocomposites (CoFeZr)0.426+(Al2O 3)o.574 at...

The paper presents testing of transition resistance, temperature and energy of an arc occurring in the contact gap depending on the kind of an applied protective coating.

Element-based coatings (E=Cr, Mo) deposited on carbon P-324 by means of self-ion assisted deposition (SIAD) technique exhibit some advanced properties such as specific surface area. The SIAD modified surfaces of carbon were examined using investigation of the surface area and porosity by High Speed Gas Sorption Analyzer NOVA 2200 (Quantachrome Corp...

The paper presents results of testing of the damage rate of protective silver coating spread on the switch contacts. There have been formulated the adequate conclusions relating to the choice of a suitable silver coating for the given operating conditions of the contacts.

The paper presents results of investigations into operating changes in the surface concentration of silver of protective coatings electroplated onto copper contacts of commonly used switches.

New experimental results on studies of the structure, element and phase composition of hybrid coatings deposited on a substrate of stainless steel AISI 321 are presented using combined application of several methods of coating deposition (plasma-detonation and vacuum arc ones) with subsequent surface treatment by a high-current electron beam (HCEB)...

Permittivities of 1-alkyl-3-methylimidazolium tetrafluoroborates, hexafluorophosphates, and tetrafluoroborate-chloride mixtures (alkyl = butyl, hexyl, octyl or decyl) were determined from the capacitance of a specially designed capacitor, which was measured as the function of frequency over the range from 0.001 Hz to 5 MHz. The measurement setup wa...

Experimental results on frequency and temperature dependences of conductivity of GaAs layers compensated by polyenergetic H+ implantation are presented. A model of hopping conductivity related to amphoteric defects is proposed.

Photovoltage (PV) spectra of standard commercial Czochralski n- and p-type silicon wafers with different resistivity subjected to hydrogenation and/or 3.5MeV electron irradiation have been studied. The PV signal was generated using a band bending present in the wafers. For more information about the influence of hydrogenation and/or electron irradi...

The paper presents the results of operational characteristics measurements on electrical contacts covered with two-component coatings of Ni+Au, Au+W, Pt+Au and Ni+Ag on copper surfaces. A method of one-beam dynamic ion mixing has been used to deposit those layers. An essential depth redistributing the deposited atoms is revealed by AES spectroscopy...

The isolation behaviour in n-type GaAs due to proton implantation is studied. Good-quality electrical isolation has been achieved by polyenergetic implantation of H+ ions with energies up to 400 keV. A conductivity dependence on the frequency has been measured for the GaAs layers modified by proton irradiation both before and after annealing in the...

The results of investigation into the effect of hydrogen plasma treatment and annealing on the electrical activity of grain boundaries (GBs) in silicon ribbons manufactured with the edge-defined film-fed growth (EFG) technique are presented. It is shown that hydrogenation with small doses of introduced hydrogen leads to decrease of the GB electrica...

A unique approach and a single-ion-beam experimental setup for in situ ion implantation combined with the deposition of various materials, ion-beam mixing and sample surface cleaning are suggested. Rutherford backscattering (RBS) and Auger electron spectroscopy (AES) have been used to measure the radial and depth distributions of deposited/implante...

The change of the tribological properties after ion implantation of two kinds of tool steels: chromium—NC11LV and chromium free—N11E was studied. Nitrogen and argon implantations were carried out in different orders at energy 120keV with the doses 5×1017 and 1×1017ions/cm2, respectively. Significant improvement of abrasive wear and friction coeffic...

Track formation processes in InP and GaAs crystals irradiated with swift Bi and U ions to fluences in the range 5×1010–1×1012cm−2 have been investigated by means of selective chemical etching (SCE), atomic force microscopy (AFM) and computer simulation. SCE data on the InP crystals show the formation of the two-layer system of tracks differing by t...

Dressed state electron paramagnetic resonance (EPR) nutations of E1′ centers in neutron-irradiated crystalline quartz are observed using, in addition to the continuous microwave field 2B1cos(ωt) and the pulse of longitudinal magnetic field, a linearly polarized RF field 2B2cos(ωrft) along the static magnetic field. The dressed nutation of the frequ...

Within the presented research work magnetization and demagnetization of Cd1-xFexTe compounds have been observed. Tests on anisotropy have been performed for samples of various compositions and shapes. The obtained results indicate that the tested materials are of spin glass properties.

An original approach and a single-ion-beam experimental setup for in situ ion implantation combined with the deposition of various materials on metals are suggested. The simulation system developed makes it possible to characterize ion-assisted deposition, as well as to analyze the radial and depth distributions of atoms deposited and implanted. Th...

A new original approach and an experimental setup were proposed by the authors in order to realize in situ ion implantation and different material layer deposition on metals by the same ion beam. The developed simulation software enabled us to describe ion beam assisted deposition process as well as to calculate radial and depth distribution of dep...

A new system for ion beam assisted deposition (IBAD) of metal layers on solid surfaces is described. A new original procedure for IBAD modification of metal surface covers a few physical processes such as in situ ion implantation, metal layer deposition and ion beam mixing. A truncated cone serves as a sputter target. A beam of ions enters the cone...

Implantation of nitrogen ions with simultaneous deposition of atoms of another element allows for additional modification of implanted steel properties compared with the typical nitrogen implantation. Chromium-free tool steel NW1 was used in the studies. Energy of implanted nitrogen ions was 60 and 100keV and the dose was changed in the range (1–10...

Electron spin resonance in semimagnetic Cd1−x MnxTe (0<x<0.7) and Zn1−x MnxTe (0<x<0.53) compounds was studied at temperatures of 77 and 300 K. It is found that two types of paramagnetic centers exist in Zn1−x MnxTe, one of which is related to Mn2+ ions and the other is attributed to structural defects in the crystals.

Unit capacitance measurements were performed for compensated silicon layers which were at first irradiated by 100 keV Ne+ ions with a fluence of 2.2×1014 cm−2 and then subjected to 2 s rapid thermal annealing (RTA) within the 350–910 °C temperature range. It has been found that four types of defects can influence the dielectric properties of the im...

Temperature dependences of the peak location and the half-width of the absorption band related to neutral divacancies in the spectrum of Si irradiated with neutrons at a dose of 1019 cm−2 were studied. The results were analyzed in terms of the concept of the defect-level band, whose width depends on the degree of compensation and on temperature.

The theoretical approach and Monte-Carlo dynamic simulation code BEAM2HD have been developed in order to simulate the process of one- or two-beam high dose ion implantation into the multilayer and multicomponent targets. The following factors that are essential for high dose implantation were taken into account: (a) sputtering of a target surface b...

Implantation conditions necessary to form a sub-surface depth layer containing cavities by H+ and He+ implantation into Si were determined and discussed. Ion energy and fluence in the two cases were chosen to meet the criteria necessary to form a gettering layer located deeper than the active regions in submicro devices. The results obtained allowe...

The results of studying the temperature and frequency dependences of the permittivity of Cd1−x FexSe (x=0.05, 0.105, and 0.14) semimagnetic semiconductors are reported. In the frequency region of f<10 MHz and at temperatures of T<400 K, a thermally activated increase in the permittivity due to the hopping mechanism of the charge exchange is observe...

The dielectric permittivity and conductivity of Cd1-xFexTe compounds (0<x less than or equal to 0.03) are measured as functions of temperature and frequency. It is found that the Fe atoms are distributed in a correlated fashion in the Cd sublattice. (C) 1999 American Institute of Physics. [S1063-7826(99)00203-3].

The theoretical approach and physico-mathematical model for the process of the high dose ion implantation are developed. The model, involved, makes it possible to take into account a set of the following effects: scattering of the being implanted ions on the atoms introduced at the earlier stages; sputtering of the target surface by ion beams; as w...

The paper discusses the unit capacity changes in capacitors with a dielectric in a from of silicon implanted through an aluminum layer. The result of tests indicate that the course of Cu = f(Ta) is determined to a great extent by the processes in the implanted layer while the effect of the capacitor plates is insignificant.