Andrzej Musial

Andrzej Musial
Institute of Molecular Physics, Polish Academy of Sciences · Department of Magnetic Alloys

MSc

About

19
Publications
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74
Citations

Publications

Publications (19)
Preprint
Full-text available
(Fe,Co)$_2$B-based compounds with specified 5$d$ substitutions are considered as promising materials for permanent magnets without rare-earth elements. We conducted a combined first-principles and experimental study focused on (Fe$_{0.7}$Co$_{0.3}$)$_2$B alloys doped with W and Re. First, we used full-potential local-orbital scheme to systematicall...
Article
Full-text available
A progressive way in photodynamic therapy is to design photosensitive agents that may operate at lower optical power. Hybrid organic–inorganic silver-, iron-, and silver&iron-contained nanoparticles (NPs) were synthesized using H. perforatum extract and explored as photosensitizers for anticancer and antimicrobial photodynamic therapies at ultra-lo...
Article
The application of two-dimensional (2D) materials as a building component for aerogels formation allows obtaining three-dimensional (3D) structures featured by remarkable physiochemical properties. One of the most commonly applied 2D materials for the aerogels fabrication is a graphene oxide (GO), which can undergo chemical or thermal reduction for...
Article
Full-text available
Crystalline structure, thermal stability and magnetic properties of Hf2(FexCo1-x)11B (x = 0.2, 0.4) alloys were investigated and compared to those of well-known Hf2Co11B parent compound. Fully amorphous ribbons were synthesized by rapid quenching. The increasing amount of Fe resulted in higher thermal stability of the amorphous ribbons, as the crys...
Article
Full-text available
Carbon nanostructures are utilized in a plethora of applications ranging from biomedicine to electronics. Particularly interesting are carbon nanostructured quantum dots that can be simultaneously used for bimodal therapies with both targeting and imaging capabilities. Here, magnetic and optical properties of graphene oxide quantum dots (GOQDs) pre...
Article
In this work we investigated FeNi-based alloys synthesized from the cosmic matter of Morasko Meteorite (MM). The fall of Morasko iron meteorite is one of the biggest known in Central Europe and it has been dated to take place about five thousand years ago. It is known that iron meteorites contain hard magnetic tetrataenite phase (L10 FeNi), which h...
Article
The evolution of crystalline structure induced by heat treatment and high pressure torsion (HPT) deformation and its influence on the magnetic properties of amorphous and partially crystalline Hf 2 Co 11 B ribbons were investigated. Slight improvement in thermal stability of the as-quenched sample after deformation was observed as indicated by the...
Article
The quantities describing glass forming ability (GFA) of (Hf,Cr)CoB system were calculated. Enthalpies of formation of amorphous state, solid solution and intermetallic phases were determined and discussed along with normalized mismatch entropy and glass forming ability parameter. All thermodynamic quantities were confronted with the experimental r...
Article
Full-text available
Influence of heat treatment on magnetic properties of amorphous Hf2Co11B alloy was investigated. Hard magnetic phase, characterized by high magnetic anisotropy, appears during crystallization. The highest coercive field equal to 1.86 kOe, was obtained for sample annealed in third crystallization stage. Longer heat treatment at Ta = 650 °C leads to...
Article
Crystallization kinetic and crystalline structure of melt-spun fully amorphous Hf2Co11B alloys in as-quenched state and after annealing were investigated. Differential scanning calorimetry measurements in isochronal mode were performed with different heating rates q to characterize crystallization process. Three exothermal peaks occur during heatin...
Article
Egg-shaped nanoparticles with a core-shell morphology were synthesized by thermal decomposition of an iron oleate complex. XRD and M(T) magnetic measurements confirmed the presence of FeO (wustite) and Fe3O4 (magnetite) phases in the nanoparticles. Oxidation of FeO to Fe3O4 was found to be the mechanism for the shell formation. As-made nanoparticle...
Article
Evolution of crystalline structure caused by heat treatment and its influence on magnetic properties of two melt-spun Hf2Co11B alloys in fully amorphous and partially crystalline states have been investigated. The as-cast ribbons were annealed in order to improve the hard magnetic properties by inducing the formation of nanocrystalline phases with...
Article
Full-text available
The multi component Fe74Hf4Ta1Cu1Gd1LaxSi15−xB4 (x = 0, 7) alloys are promising candidates in the search for materials with unusual mechanical and magnetic properties. Amorphous nature of melt-spun samples was conrmed by X-ray diractometry and Mössbauer spectroscopy. The X-ray diraction patterns revealed a distinct amorphous halo. The low-eld compo...
Article
The multi component Fe(74)Hf(4)Ta(1)Cu(1)Gd(1)La(x)Si(15-x)B4 (x = 0, 7) alloys are promising candidates in the search for materials with unusual mechanical and magnetic properties. Amorphous nature of melt-spun samples was confirmed by X-ray diffractometry and Mossbauer spectroscopy. The X-ray diffraction patterns revealed a distinct amorphous hal...
Article
Full-text available
Structural and magnetic properties of a series of melt spun alloys Y1−xGdxCo2, with x = 0, 0.2, 0.4, 0.5, 0.6, 0.8 and 1, were investigated. The studied samples were prepared by arc melting in argon atmosphere and next were synthesized in the melt-spinning process in the form of flakes. During the synthesis, large number of defects such as free vol...
Article
Full-text available
The amorphous alloys R4.5Fe77B18.5 (R=Pr, Nd) were prepared by melt-spinning technique under argon atmosphere on a cooper wheel rotating with surface velocity of 25 m·s-1. The ribbons have been investigated by means of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Temperatures of crystallization for Pr 4.5Fe77B18.5, measured...
Poster
Full-text available
Magnetite Fe3O4 is one of the most preferred materials to combine with various polymers because of unique physical properties, like ferromagnetic ordering, large magnetic moment, relatively high conductivity and high ratio of spin polarization. These features make magnetite a highly desired material for future applications in medicine, spintronics,...

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