A5010182975- Advanced Photocatalysis Techniques
- Topological Materials and Phenomena
- Multiferroics and related materials
- Advanced Condensed Matter Physics
- Luminescence Properties of Advanced Materials
- Magnetic and transport properties of perovskites and related materials
- Gas Sensing Nanomaterials and Sensors
- Supercapacitor Materials and Fabrication
- 2D Materials and Applications
- Graphene research and applications
- Pigment Synthesis and Properties
- Crystal Structures and Properties
- Advancements in Battery Materials
- Transition Metal Oxide Nanomaterials
- Glass properties and applications
- Advanced Thermoelectric Materials and Devices
- Quantum and electron transport phenomena
- Quantum many-body systems
- MXene and MAX Phase Materials
- Rare-earth and actinide compounds
- Electrocatalysts for Energy Conversion
- Phase-change materials and chalcogenides
- Ga2O3 and related materials
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
Guru Ghasidas Vishwavidyalaya
2014-2024
National Changhua University of Education
2021
Indian Institute of Technology Bombay
2021
Sejong University
2011-2012
Universidade Federal do Rio Grande do Norte
2010
Osmania University
2009
UGC DAE Consortium for Scientific Research
2009
Abstract First-principles calculations were performed to investigate the electronic, magnetic, and topological properties of nearly half-metallic ferromagnetic Heusler alloy CoFeVGe. The compound was found exhibit mechanical dynamical stability. We conducted a comprehensive study anomalous Hall Nernst effects, attributed Berry curvature induced by spin–orbit coupling (SOC). maximum conductivity (AHC) (ANC) determined be −340.2S/m −1.26Am −1 K at 300 K, respectively, within an energy window...
Abstract Kagome-lattice crystal is crucial in quantum materials research,
exhibiting unique transport properties due to its rich band structure and the presence
of nodal lines rings. Here, we investigate electronic properties
and perform first-principles calculations for Ni3In2Se2 kagome topological semimetal.
First-principles of without inclusion spin-orbit
coupling (SOC) shows that three bands are crossing Fermi level (EF ), indicating
the...
The CrVO4 and reduced graphene oxide (rGO)–CrVO4 composite has been synthesized through solid-state reaction modified Hummer method ultrasonication-assisted method, respectively. structural, compositional, morphological features were studied by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission microscopy techniques. spectroscopy shows the indicative GO, peaks, respectively, coexistence of these peaks in material. photocatalytic activity rGO–CrVO4 evaluated...
We present temperature dependent frequency shift and line broadening of phonon modes by insertion atomic layers Pb PbTe in the prototype 3D topological insulator Bi2Te3, using Raman spectroscopy. Good quality single crystals Pb2Bi2Te3, PbBi2Te4 PbBi4Te7 are grown modified Bridgman technique. The show progressive blue with decrease from 298 K to 93 is due anharmonic vibrations lattice as well increasing strength Bi-Te covalent interactions. Experimental results complemented extensive density...
Phase diagram of FeVO4-CrVO4 solid solutions pertinent with structural and magnetic phases is presented unambiguous experimental evidences. Solid Fe1–xCrxVO4 (0 ≤ x 1.0) were synthesized through the standard state route studied by X-ray diffraction, scanning electron microscopy, energy dispersive spectra X-rays, Raman spectroscopy, d.c. magnetization, 57Fe Mössbauer spectroscopic studies. FeVO4 CrVO4 found to be in triclinic (P-1 space group) orthorhombic structures (Cmcm group),...
The influence of dopants (Co, Cu, Fe and Ni) on the optical, electronic magnetic properties multiferroic MnWO4 was studied using Raman spectroscopy, ultraviolet-visible spectroscopy (UV-Vis), magnetization measurements density functional theory (DFT) calculations. evolution spectra with different elemental substitutions at Mn site also studied, where peak width increased doping higher mass elements Ni). UV-Vis diffuse reflectance polycrystalline Mn(1-x) A x WO4 (A = Co, (0 ⩽ [Formula: see...
The structural modifications associated with magnetic and multiferroic transitions in ${\mathrm{FeVO}}_{4}$ polycrystalline samples have been investigated using complementary techniques, including synchrotron radiation x-ray diffraction (XRD), Raman spectroscopy, absorption fine-structure spectroscopy (XAFS). Temperature-dependent measurements reveal unveiled details of the local intimately related to spin-lattice coupling. This study is particularly focused on illuminating changes occurring...
Abstract We present a detail study of Shubinikov-de-Haas (SdH) oscillations accompanied by conductance fluctuations in mesoscopic topological insulator PbBi 4 Te 7 device. From SdH oscillations, the evidence Dirac fermions with π Berry phase is found and experimentally determined two main Fermi wave vectors are correlated to surface cones (buried one inside other) layered . have also fluctuations, root mean square amplitude which much higher than usual universal observed nanometer size...
A detailed account of magnetolattice coupling, magnetic frustration, and magnetoelectric effects in ${\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Cr}}_{x}{\mathrm{VO}}_{4}$ ($x=0\ensuremath{-}1.0$) studied by temperature-dependent synchrotron x ray diffraction (SXRD), temperature- magnetic-field-dependent dielectric permittivity $\ensuremath{\varepsilon}$, magnetization measurements are presented this paper where progressive Cr doping leads to structural transitions from triclinic...
Abstract Constructing novel multifunctional materials is a promising approach to boost the catalytic activity and electrochemical performance simultaneously. Herein, hydrothermal synthesized FeVO 4 nanosized particles dispersed on reduced graphene oxide (rGO) through cost‐effective simple sonochemical assisted route are developed as an efficient material for photocatalysis high‐value‐added supercapacitor applications. The were characterized structural morphological purity found be in single...
Electrical and magnetic transport properties of polycrystalline La0.42Eu0.25Ca0.33MnO3 manganite perovskite are reported here. Temperature dependence electrical transport, in 0 0.6 T external fields, shows insulating behaviour down to the lowest measured temperatures. Application 6 field induces two different transitions: (1) an insulator–metal transition around 110 K (2) a low temperature upturn resistance values at 30 K. These field-induced transitions suggest strong competition between...
A Low temperature method for synthesizing triclinic FeVO4 nanoparticles is manifested through co-precipitation method. Three precursor materials taken the synthesis are Iron Nitrate, Ammonium Metavanadate and NaOH along with DI water. The attained precipitate was dried at 100°C overnight calcined different temperatures ranging from 400°C – 650°C. achieved powdered studied X ray diffraction found to be in pure single phase of P-1 space group symmetry. crystallite size measured Scherrer's...