I.B. Shameem Banu

B. S. Abdur Rahman University · Department of Physics

This study synthesized pristine and aluminum (Al)-doped zinc oxide (Al:ZnO) nanostructures through a simplistic low-temperature ultrasonicated solution immersion method. Al:ZnO nanostructures were synthesized as a sensing material using different immersion times varying from two to five hours. The Al:ZnO nanostructured-based flexible humidity senso...

The effect on structural, morphological and optical characteristics towards humidity sensing capability was elucidated as humidity-sensitive sensing material that is made by composting zinc oxide nanostructured powder (ZN) nanoparticles with varying capacities of reduced graphene oxide (rGO). The ZN was successfully synthesized through the ultrason...

Dye co-sensitization technique is a promising strategy adopted to establish a broader absorption wavelength and higher spectral response towards panchromatic light-harvesting of dye-sensitized solar cells, DSSC. In this work, the co-sensitizing between chlorophyll pigment extracted from Mitragyna Speciosa (kratom) and anthocyanin pigment extracted...

This work presents a nanocomposite-based humidity sensor based on zinc oxide nanostructured powder (ZNP) nanoparticles that achieves a maximum enhancement in the humidity sensing performance at room temperature due to the introduction of different amounts of reduced graphene oxide (rGO) loading from 0.5 wt.% to 2.0 wt.%. The rGO/ZNP (rZNP) nanocomp...

The aim of the paper is to study a distribution of ions inside a zinc oxide (ZnO) target during sputtering process using different gases. The plots of ion distribution were obtained from the simulation results using Stopping and Range of Ions in Matter (SRIM)-2013 software. Generally, the SRIM software is utilized to calculate a variety of paramete...

We have prepared waste curry leaves extract derived carbon dots (CL-C dots) by microwave assisted method. The synthesized CL-C dots were well characterized by many techniques. Using HR-TEM images, the size of the synthesized CL-C dots were determined to be 3.55 nm. CL-C dots exhibits green fluorescence and obtained emission maximum at 425 nm upon t...

We report on the novel multiferroic (x)CuFe2O4 − (1 − x)KNbO3 (x = 0.2, 0.3, and 0.4) nanocomposite prepared by conventional solid state route. Structural analysis reveals that a perovskite orthorhombic phase corresponding to KNbO3 and cubic spinel phase corresponding to CuFe2O4 were simultaneously present in each nanocomposite. All the nanocomposi...

The electronic, magnetic and half-metallic structure-dependent properties of the binary alkaline earth pnictides SrP and SrAs are evaluated using the formalism of density functional theory (DFT) within GGA, GGA + U, and mBJ approaches. The comparison of the volume energy plot shows that the rock-salt structure is the stable structure, while the zin...

A series of Pr substituted at the Bi site of BiFeO3 were synthesized by the sonochemical method. The Pr composition was varied from low to high level at Bi1-xPrxFeO3 (x = 0.0, 0.05, 0.10, and 0.15) to analyze the impact on structural, magnetic, ferroelectric, electrical, morphological, and semiconducting properties. The X-ray diffraction pattern re...

Single phase BiFeO 3 and Bi 1-X Nd X Fe 0.98 Ni 0.02 O 3 (x=0.01, 0.03 and 0.05) ceramics were prepared by sol-gel method to investigate the effect of neodymium and nickel substitution on the structural, optical, magnetic, and magnetoelectric properties. The X-ray diffraction pattern of single phase and doped samples confirms the formation of pure...

The body centered tetragonal chalcopyrites ZnAP2 (A = Si, Ge, Sn) were explored by employing the full potential linearized augmented plane wave method towards the study of their unique electronic, optical and bonding properties. Our calculations show that the ZnSiP2, ZnGeP2, ZnSnP2 compounds are direct bandgap semiconductors. The spectral propertie...

The novel hematite (α-Fe2O3)/nickel oxide (NiO) heterostructures were grown on fluorine-doped tin oxide (FTO) coated glass substrates at various deposited NiO of 3, 5, and 7 layers. The heterostructures were successfully synthesized using the immersion and sol–gel spin coating methods for α-Fe2O3 and NiO films, respectively. The field emission scan...

In the present work, the effects of (Dy, Cu) substitution on the dielectric and impedance behaviour of BiFeO3 were investigated. The synthesized doped samples Bi1−xDyxFe0.98Cu0.02O3 (0.01 ≤ x ≤ 0.05) were characterized by a combination of physicochemical techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM)...

The zinc doped nickel oxide (Zn:NiO) nanostructures with 0 at.% (UD), 1 at.% (1ZNO), and 2 at.% (2ZNO) of Zn concentrations were successfully deposited on the NiO seed-coated glass substrates. The films were successfully produced from two synthesis techniques: the sol-gel spin coating for NiO seed-coated and the solution immersion for the Zn:NiO na...

Gadolinium doped bismuth ferrite (Gd:BFO) nanoparticles were synthesized using an auto combustion method. The structural analysis of the prepared Gd: BFO nanoparticles showed that all samples exhibit a rhombohedral structure. The optical analysis shows the doping of Gd ions reduces the band gap value of BFO from 2.21 eV to 2.17 eV. The presence of...

In this work, nickel oxide (NiO) nanosheet/nanoball-flower-like structures (NSBS) were directly grown on a NiO seed-coated glass substrate using a low-temperature immersion method at 75 ºC. The thickness, or density, of the nanoball-flower-like structures differed based on the following samples order: NSBS1 < NSBS2 < NSBS3. The synthesised NSBS fil...

Nickel oxide (NiO) nanosheet films were successfully grown onto NiO seed-coated glass substrates at different annealing temperatures for humidity sensing applications. NiO seed layers and NiO nanosheet films were prepared using a sol-gel spin coating and sonicated sol-gel immersion techniques, respectively. The properties of NiO nanosheet films at...

For the first time, flower-like titanium dioxide (TiO2) nanorod array (TFNA) films were grown on sputtered TiO2 seed layer-coated glass substrate without fluorine-doped tin oxide (FTO) layer during 1–5h immersions. The optimum immersion time was 4h, which produced a dense TFNA structure with thickness of 19µm. X-ray diffraction results revealed tha...

Solvent engineering is a powerful technique to achieve high performance Organic- Inorganic Halide Perovskites (OIHPs) which emerged as a potential candidate for various optoelectronic applications. In the present work, lead free CH3NH3SnCl3 perovskites were prepared using two different mixed solvents namely N, N-dimethylformamide (DMF): Dimethylsul...

A highly porous nickel oxide (NiO) nanoflower was deposited directly onto glass substrates by the simplistic immersion method. The nanostructural property of the NiO was studied by X-ray diffraction pattern and obtained high crystal quality after annealing at 500 °Ϲ with an average crystallite size of 15.5 nm. The optical characterization was measu...

A coupling heterostructure consisting of nickel oxide nanosheets (NNS) and titanium dioxide nanorod arrays (TNAs) was fabricated for self-powered solid-state ultraviolet (UV) photosensor applications. By controlling the thickness of the NNS layer by via varying the growth time from 1 to 5 h at a deposition temperature of 90 °C, the coupling NNS/TNA...

We developed aluminium (Al)-doped nickel oxide (NiO) nanosheet arrays film on the indium-doped tin oxide (ITO) substrate via sol–gel immersion method using nickel nitrate hexahydrate and aluminium nitrate nonahydrate as precursor and dopant materials, respectively. The Al-doping concentrations were varied from 0 to 2 at.%. Uniform Al-doped NiO nano...

A series of Yb and X co-doped BiFeO3 (X = Nb, Mn, Mo) and undoped BiFeO3 polycrystalline ceramics were prepared by sol-gel method. The X-ray diffraction pattern confirmed the rhombohedral perovskite structure for all the ceramics. Reitveld refinement results bring out the impact of doping on the structural distortion. The Transmission Electron Micr...

Single phase multiferroic undoped BiFeO3 notoriously suffers due to the poor spin‐charge coupling resulting in limitations to device applications. The present work focuses on the tailoring of its multiferroic and magnetoelectric coupling properties by synthesizing multiferroic Bi0.95Er0.05Fe0.98TM0.02O3 (TM = Nb, Mn and Mo) ceramics. The ferroelect...

Lead-free composite ceramics xMnFe2O4-(1 − x) KNbO3 with the composition of x = 0.20, 0.30 and 0.40 were synthesized by the solid state reaction method to obtain the composites of ferrite and ferroelectric to achieve magnetoelectric coupling. A confirmation study for the formation of spinel cubic MnFe2O4 ferrite ceramic and orthorhombic KNbO3 ferro...

The growth of titanium dioxide nanorod arrays (TNAs) in aqueous solutions containing titanium butoxide and hydrochloric acid can be controlled by regulating the temperature from 115 to 150 °C as an adjustable physical parameter. The transparent colloidal solution of titanates is clouded on the basic growth of TNAs when heated at a certain temperatu...

Intrinsic zinc oxide (ZnO)/Al-doped ZnO (AZO) homojunction film was prepared using two-step immersion processes. The film was characterized using field emission scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, and ultraviolet–visible spectrophotometer to investigate their structural and optical properties. The surface morp...

Nickel Oxide (NiO) nanosheet architecture films were synthesized using solution immersion method on indium tin oxide (ITO)-coated glass at different growth times. The X-ray diffraction patterns and Raman spectra reveal that crystalline NiO films were grown on ITO glass. The microscopy images exhibit the presence of 10 nm-width nanosheet architectur...

Single-phase polycrystalline BiFeO3 and Bi0.6Sr0.4FeO3−δ are prepared by conventional solid-state route. The host BiFeO3 shows rhombohedral phase (R3c) and Bi0.6Sr0.4FeO3−δ, cubic phase (Pm3m). The M–H loop of Bi0.6Sr0.4FeO3−δ exhibits weak magnetization at ambient temperature with saturation magnetization of 5.097 emu/g which is almost two orders...

Tin (Sn)-doped zinc oxide (ZnO) nanorod arrays (TZO) were synthesized onto aluminum-doped ZnO-coated glass substrate via a facile sonicated sol–gel immersion method for humidity sensor applications. These nanorod arrays were grown at different Sn concentrations ranging from 0.6 to 3 at.%. X-ray diffraction patterns showed that the deposited TZO arr...

A series of nanocomposites xNiFe2O4–(1 − x)LiNbO3 (x = 0.20, 0.30 and 0.40) were synthesized by solid state reaction method. The existence of phases in the composite was confirmed by XRD. The TEM and HRTEM image reveals the existence of two phases and high crystallinity of the sample. Average particle sizes were measured by transmission electron mi...

For the first time, single phase monoclinic Li3Ba2Gd3 (MoO4)8: 0.08 Tb³⁺,yEu³⁺ (0, 0.005, 0.02, 0.04, 0.06, 0.08 and 0.10 mol) nano phosphors were prepared by the simple mechanochemically assisted direct solid state reaction method at room temperature. Their crystal structures, luminescence properties, energy transfer mechanism and life time were s...

The original version of the article unfortunately contained an error in corresponding author information. The corresponding author of this article is Dr Saravana Kumar Jaganathan and his email address is [email protected] © 2017 Springer Science+Business Media, LLC, part of Springer Nature

Herein, the structural and optical properties of highly porous nanocarnation-like nickel oxide (NiO) thin film in possibility of sensing applications were reported. The highly porous nanocarnation-like NiO was grown on indium tin oxide (ITO) glass substrates by using sonicated solgel immersion process. The grown film was characterized in details to...

Room temperature ferroelectric and magnetic properties of undoped BiFeO3 and (Nd, Co) codoped BiFeO3 are reported. The sol–gel synthesized Bi1−XNdXFe0.98Co0.02O3 (x = 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06) ceramics were analysed by XRD pattern, Raman spectrum, X-ray photoelectron spectrum (XPS), ferroelectric loop and magnetic hysteresis loop. The...

Eu3+ activated NaLa(WO4)2 (NLW) red phosphors were synthesized via an ethylene glycol route at low temperature as 120 °C for solid state lighting applications. X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), FT-IR, Raman, emission and excitation properties were studied for synthesized NLW phosphors. XRD analysis endor...

The influence of Gd dopant and (Gd, Cu) dopants on the ferroelectric, dielectric and magnetoelectric properties of single phase BiFeO3 (BFO) were investigated. Nanoparticles of undoped BiFeO3, Bi0.95Gd0.05FeO3 and Bi1−xGdxFe0.98Cu0.02O3 (x = 1, 2, 3, 4 and 5%) were prepared by sol–gel method. X-ray diffraction reveals that all the samples crystalli...

Structural, magnetic and elastic properties of Mn and Sb doped CrN were investigated by the electronic band structure calculations using Full Potential Linear Augmented Plane Wave (FP-L APW) method. The host compound CrN was doped with Mn and Sb separately, in the doping concentration of 12.5% to replace Cr atoms. The introduction of Mn and Sb atom...

Nanoparticles of Bi1−x Zrx Fe0.98Cu0.02O3 (x = 1 %, 2 %, 3 %, 4 %, 5 %) were prepared by sol–gel method. The influences of Zr dopant on the characteristics of polycrystalline BiFeO3 (BFO) have been studied. X-ray diffraction study confirms the formation of nanocrystalline rhombohedral phase without distortion. The average crystallite size is found...

In the current study, the structural, electronic and magnetic properties of Zn1-xVxS (at x = 0.125 and 0.25) have been investigated using full-potential linearized augmented plane wave plus local orbital (FP-LAPW + lo) method within the density functional theory (DFT). The Perdew-Burke-Ernzerhof generalized gradient approximation (PBE-GGA) has been...

A series of Li3Ba2Gd3-xPrx (MoO4)(8) and Li3Ba2Gd3-xSmx (MoO4)(8) red phosphors were synthesized by conventional solid state reaction method. For 7 mol % of Pr3+ and for 8 mol% of Sm3+ concentration, the phosphors exhibit a strong excitation peak at 450 nm (blue light) and 401 nm (near UV) indicating an intense absorption. The PL emission spectra o...

The effect of temperature on perovskite Pb(Zr0.52Ti0.48)O3 ceramic material on their dielectric, impedance and dc conductivity properties were studied. Structural, phase formation and thermal properties were confirmed by X-ray diffraction, thermogravimetry and differential thermal analysis. The electrical properties of the ceramics were investigate...

A series of Li3Ba2Gd3-xPrx (MoO4)8 and Li3Ba2Gd3-xSmx (MoO4)8 red phosphors were synthesized by conventional solid state reaction method. For 7 mol % of Pr3+ and for 8 mol% of Sm3+ concentration, the phosphors exhibit a strong excitation peak at 450 nm (blue light) and 401 nm (near UV) indicating an intense absorption. The PL emission spectra of Li...

A highly efficient green emitting phosphor, Tb³⁺-activated Li3Ba2Gd3-x(MoO4)8, was synthesized by mechanochemically assisted solid state metathesis reaction route at room temperature and its luminescence properties have been investigated. Under excitation of UV light, these Li3Ba2Gd3-x(MoO4)8: xTb³⁺ phosphors showed a strong emission band centered...

The half-metallic ferromagnetic property of Cr, V doped CdN and ZnN has been investigated by the electronic band structure calculations using Full Potential Linearized Augmented Plane Wave (FP-LAPW) method. The host compounds of CdN and ZnN were doped with Cr and V in the concentration of 37.5% to replace Cd and Zn atoms. The compounds CdN and ZnN...

A series of Bi1-x Lax Fe0.98Cu0.02O3 (x = 0.01, 0.03 and 0.05) ceramics were synthesized by sol–gel method. The prepared ceramics were characterized by X-ray diffractometer (XRD), vibrating sample magnetometer (VSM) and dielectric measurement. XRD patterns reveal that Bi1-x Lax Fe0.98Cu0.02O3 (x = 0.01, 0.03 and 0.05) ceramics crystallize in single...

The investigations on the half-metallic ferromagnetic property for Fe(Mn)-doped CdN and ZnN have been reported in this work. We performed electronic band structure calculations using full-potential linear augmented-plane-wave method. Fe(Mn) were substituted into the host compounds in doping concentration of 37.5 % to replace Cd and Zn atoms in CdN...

The 0.85Bi0.95Dy0.05Fe0.98Cu0.02O3–0.15BaTiO3 and 0.85Bi0.95Dy0.05FeO3–0.15BaTiO3 multiferroic compo- sites were prepared by a solid state reaction method. The XRD patterns of the composites confirmed the presence of BiFeO3 and BaTiO3. The ME coupling of the composites shows conspicuous enhancement compared to that of undoped BiFeO3. Among the comp...

A green-emitting CaMoO4 co-doped by Tb3+ nanophosphor was fabricated by solid-state metathesis reaction route for the first time. X-ray powder diffraction (XRD) analysis revealed that pure CaMoO4 was obtained. Under excitation of UV light, these CaMoO4:x Tb3+phosphors showed a strong emission band centered at 547 nm (green) which corresponds to5D4→...

ZnO based diluted magnetic semiconductor thin films were prepared by simultaneously doping the non-magnetic Cu and K in the cation sites of the host ZnO employing the chemical bath deposition method. In this study, K was kept at a concentration of 1% and Cu concentration was varied at 1%, 2%, 3% and 4%. For comparative study, 1% K doped ZnO was als...

Fe and K simultaneously doped ZnO thin films Zn0.99 K0.01 (Fe)x O (, 2, 3, and 4%) were synthesized by chemical bath deposition method. The XRD investigation reveals that all the doped ZnO thin films are in hexagonal wurtzite crystal structure without impurity phases. With increase in Fe concentration, the growth of thin films along c axis is evide...

Pulsed laser deposition method was employed to grow nanostructured Pb(Zr0�52Ti0�48�O3 (PZT) thin film on Si(100) substrate. The structural and morphological properties of the thin film were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM) respectively. Optical properties of PZT thin film were studied using spectroscopi...

Novel ZnO/KI composite were synthesized by solid state reaction method at room temperature. The crystalline nature of the composite materials determined by X-ray diffraction analysis demonstrates the presence of ZnO and KI peaks. The presence of zinc, potassium, iodine is confirmed by EDAX analysis. The surface morphology of the composites exhibit...

Optically efficient terbium activated alkaline earth metal tungstate nano phosphors (AWO4 [A = Ca, Sr]) with different doping concentrations have been prepared by mechanochemically assisted solid state metathesis reaction at room temperature for the first time. The prepared phosphors were characterized by the X-ray diffraction (XRD), Fourier transf...

ZnO nanocomposites such as (ZnO) 0.8(MnO2)0.2, (ZnO) 0.8(TiO2)0.2and (ZnO) 0.8 (MnO2)0.1(TiO2)0.1 were prepared by solid state reaction method at room temperature. The structural analysis was carried out with help of powder XRD to confirm the formation of the composites. The morphological properties and presence of elemental compositions were analy...

Full Potential- Linear Augmented Plane Wave (FP-LAPW) method has been employed to study the electronic, magnetic, elastic and thermal properties of Fe-doped Zirconium nitride. In this work, Fe-atoms were doped into the super cell of ZrN in doping concentrations of 12.5%, 25% and 37.5% to replace Zr atoms. Electronic properties such as band structur...

For the first time, Li3Ba2Gd3−x(MoO4)8:x Eu3+ (x = 0.01, 0.03, 0.05, 0.07 and 0.09 mol) red phosphor nanoparticles were prepared using the simple mechanochemically assisted direct solid state reaction method at room temperature and the luminescence effects as a function of Eu3+ ion concentration were studied. The characteristics of the phosphor mat...

Intense red-emitting phosphor Na0.5La0.5−xMoO4:xEu3+ (x = 0.02, 0.04, 0.06, 0.08, 0.10 mol of Eu3+) was prepared at 900 °C for 3 h using conventional solid-state reaction method. Crystal structure and phase purity of the phosphor were identified using X-ray diffraction analysis. The morphology and composition of the materials were examined by scann...

For the first time, CaMoO4: xEu3+ (x = 0.02, 0.04, 0.06, 0.08, 0.1) red phosphor nanoparticles were synthesized using the simple mechanochemically assisted solid state meta-thesis (SSM) reaction method and the luminescence properties as a function of Eu3+ ion concentration was investigated. The characteristics of the phosphor materials were analyze...

The full-potential linearised augmented plane wave (FP-LAPW) method has been used to study the elastic, thermal and bonding properties of heavy rare earth nitrides REN (RE = Tb-Lu). In the present work, band structure and density of states of TbN-LuN are studied. We have calculated the Young's modulus E, shear modulus G, bulk modulus B, Poisson's r...

Spin-polarized calculations of three half-metallic, half-Heusler compounds, namely NiMnSb, PdMnSb and PtMnSb are presented. The calculations were performed using tight-binding linear muffin-tin orbital method within the local density approximation. In this work, the lattice constants, bulk modulus, band structures, density of states and energy gap...

The optical properties of potassium (K) doped zinc oxide (ZnO) thin films deposited onto glass substrate by chemical bath deposition (CBD) technique is investigated. The crystallinity, surface morphology and the element composition of the thin films were studied. The optical behavior of K-doped ZnO thin films were investigated by optical transmitta...

Lead zirconate titanate (PZT) monophase perovskite powder with the composition of Pb(Zr0.52Ti0.48�O3 were prepared via sol–gel route. The synthesized PZT powders were calcined at different temperatures and the phase formation of PZT powders was confirmed by X-ray diffraction (XRD) studies. Thermogravimetric analysis (TGA), differential thermal anal...

Three-dimensional self-assembled rugby-ball-shaped microarchitectures of tetragonal Na0.5La0.5MoO4:Eu3+ crystal structure were synthesized by facile hydrothermal method at 200°C for 8 h using ethylenediaminetetraacetic acid (EDTA) as surfactant. Structure and morphology of Na0.5La0.5MoO4:Eu3+ were investigated by X-ray diffraction and scanning elec...

Perovskite lead zirconate titanate nanostructured (PZT) thin films with Zr/Ti ratio of 52/48 were deposited on Pt/TiO2/SiO2/Si(100) substrate using pulsed laser deposition method. A metal/ ferroelectric/metal (MFM) structure was used for ferroelectric property measurements, formed by depositing gold electrode on top of the film. A Nd:YAG UV laser h...