A5085858819- Advanced Condensed Matter Physics
- Nuclear materials and radiation effects
- Multiferroics and related materials
- Luminescence Properties of Advanced Materials
- Geological and Geochemical Analysis
- Ferroelectric and Piezoelectric Materials
- Crystal Structures and Properties
- Magnetic and transport properties of perovskites and related materials
- Solid-state spectroscopy and crystallography
- Nuclear Materials and Properties
- High-pressure geophysics and materials
- Microwave Dielectric Ceramics Synthesis
- Perovskite Materials and Applications
- Lanthanide and Transition Metal Complexes
- earthquake and tectonic studies
- Electron Spin Resonance Studies
- Inorganic Chemistry and Materials
- Physics of Superconductivity and Magnetism
- Advanced Algebra and Geometry
- Magnetism in coordination complexes
- Pigment Synthesis and Properties
- Cold Fusion and Nuclear Reactions
- Advanced Physical and Chemical Molecular Interactions
- Topological Materials and Phenomena
- Theoretical and Computational Physics
University of Kalyani
2015-2024
Kyoto University
2003-2004
Indian Association for the Cultivation of Science
2000-2002
Herein, a systematic microscopic investigation of the crystal-field (CF) effects on Mn 4+ ions doped at triclinic sites in double perovskite La 2 ZnTiO 6 crystal was performed using two independent modelling approaches based CF theory: exchange charge model and superposition model.
Accurate measurement of the magnetic susceptibility a single crystal and powder sample nearly cubic pyrochlore ${\mathrm{Ho}}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}$ (HoT) were performed between 300 70 K. A field (CF) ${D}_{3d}$ symmetry was considered to analyze results susceptibility, magnetization, magnetostriction studies quite consistently. The best fitted CF parameters found as ${B}_{20}=\ensuremath{-}980,$ ${B}_{40}=1640,$ ${B}_{43}=\ensuremath{-}1800,$ ${B}_{60}=\ensuremath{-}1000,$...
Comparative modelling of the crystal-field parameters (CFPs), CF energy levels, and effective spin-Hamiltonian (SHPs), i.e., g-factors zero-field splitting parameter (ZFSP), D, ground state 4A2g Cr3+ dopant ions in Y2Ti2O7 Y2Sn2O7 is carried out. The CFPs are calculated using XRD structural data by employing two semi-empirical models: exchange charge model (ECM) superposition (SPM). This two-fold approach ensures increased reliability CFP thus final results. modelled serve as input to...
We investigate Dy-based coordination polymer C
dc $(\ensuremath{\chi})$ and ac $({\ensuremath{\chi}}_{\mathrm{ac}})$ magnetic susceptibilities, field dependence of isothermal magnetization specific heat ${C}_{\mathrm{P}}$ measurements have been performed on a pyrochlore geometrically frustrated niobate ${\mathrm{Tb}}_{2}{\mathrm{Nb}}_{2}{\mathrm{O}}_{7}.$ The $\ensuremath{\chi}$ characteristics is consistent with collective paramagnetism down to at least $T\ensuremath{\approx}2\mathrm{K}$ effective nearest-neighbor antiferromagnetic...
We present crystal-field (CF) calculations of energy levels (Ei) Eu3+ ions doped in various hosts aimed at exploring the low-symmetry properties CF parameters (CFPs) and reliability CFP modelling with decreasing site symmetry. The studied are: Li6Y(BO3)3, Li6Gd(BO3)3, YBO3, ZnO triclinic sites; YAl3(BO3)4 trigonal D3 Two independent approaches utilizing hosts' structural data are employed: exchange charge model (ECM) superposition (SPM). adopt actual symmetry not approximated one. Ei values...