A5032840887- Multiferroics and related materials
- Magnetic Properties and Synthesis of Ferrites
- Magneto-Optical Properties and Applications
- Electromagnetic wave absorption materials
- Advanced Condensed Matter Physics
- Ferroelectric and Piezoelectric Materials
- Iron oxide chemistry and applications
- Magnetic and transport properties of perovskites and related materials
- Microwave Dielectric Ceramics Synthesis
- Magnetic properties of thin films
- Transition Metal Oxide Nanomaterials
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Turbulent Flows
- Characterization and Applications of Magnetic Nanoparticles
- Nuclear materials and radiation effects
- Semiconductor materials and interfaces
- Thermal Expansion and Ionic Conductivity
- Luminescence Properties of Advanced Materials
- Wind and Air Flow Studies
- Acoustic Wave Resonator Technologies
GITAM University
2022-2024
Indian Institute of Technology Madras
2006-2019
Material Measurement Laboratory
2015
National Institute of Standards and Technology
2015
Theiss Research
2015
University of Maryland, College Park
2015
American College, Madurai
2015
Philipps University of Marburg
2015
Philips (Germany)
2015
Bharathiar University
2015
This paper reports the structural, morphological, spectroscopic, dielectric, ac conductivity, and impedance properties of nanocrystalline Mn
Spin-polarized density functional calculations, magnetization, and neutron diffraction (ND) measurements are carried out to investigate the magnetic exchange interactions strong correlation effects in Yb substituted inverse spinel nickel ferrite. In pristine form, compound is found be a mixed insulator under Zaanen-Sawatzky-Allen classification scheme as it features both charge transfer Mott mechanisms. Estimation of couplings reveals that octahedral-octahedral octahedral-tetrahedral...
Temperature dependence of magnetization, anisotropy, and hyperfine interaction parameters NiFe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2-x</sub> Yb xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> (x = 0 , 0.05, 0.075) was investigated, the results are presented. All compounds were prepared by solid-state reaction formed in cubic inverse spinel phase with space group Fd3̅m ....
Onsite magnetic moments through cation distribution and magnetocrystalline anisotropy studies of NiFe2−xRxO4 (R = Y Lu; x 0, 0.05, 0.075) compounds were investigated, the results are discussed presented in this paper. All prepared by solid state reaction, formed cubic inverse spinel phase with space group Fd3¯m. The distribution, bond lengths, u-parameter, etc. estimated Rietveld refinement XRD patterns. Increment lattice constant was observed upon partial substitution Fe3+ Y3+/Lu3+....
NiFe2-xDyxO4 (x = 0, 0.1) compounds were prepared by solid state reaction. Room temperature X-ray diffraction confirmed the formation of in cubic inverse spinel phase with space group Increments lattice constant observed upon partial substitution Fe3+ Dy3+. While both magnetization and magnetocrystalline anisotropy (K1) decreased increasing temperature, Dy3+ substitution, at any given K1 increased. A quantitative observation direct magnetoelectric (DME) effect qualitative converse (CME)...
The temperature dependence of magnetization, anisotropy, ac and dc conductivity CoFe2?x Sn x O4 (x??=??0.025, 0.05, 0.075) were investigated the results are reported. All compounds prepared by a solid-state reaction, formation in cubic inverse spinel phase was confirmed from their Rietveld refined x-ray diffraction (XRD) patterns Raman spectra. Increments lattice constant observed upon partial substitution Fe3+ Sn4+. presence all elements ionic states photoelectron spectroscopic studies....
We report on the structural, temperature, and frequency dependent impedance studies of Ti doped cobalt ferrite material (CoFe1.95Ti0.05O4) in comparison with pure CoFe2O4. XRD Raman spectroscopy confirm inverse spinel crystallization materials space group Fd-3 m. Scanning electron microscope images shows microcrystalline nature particles. Homogeneity, stoichiometry, ionic states ions composition were confirmed by energy dispersive X-ray analysis photoelectron spectroscopic studies....
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Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Kodam Ugendar, G. Markandeyulu; Structural dielectric properties of the lutetium (Lu) yttrium (Y) doped nickel ferrite. AIP Conf. Proc. 24 April 2014; 1591 (1): 1342–1344. https://doi.org/10.1063/1.4872952 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks...
The nitrogen-incorporated nickel ferrite (N-NFO) thin films deposited by radio-frequency magnetron sputtering were found to exhibit interesting magnetic properties upon heat treatment. in-plane (IP) and out-of-plane (OP) magnetizations of the heat-treated N-NFO measured at 20 K seen not saturate even higher fields, indicating a large perpendicular anisotropy (PMA). coercive field value was decrease treatment, due weakened pinning domain walls in grain boundary volume. IP magnetization...
The dielectric and impedance spectroscopic properties of NiFe1.95R0.05O4 (R = Y, Yb Lu) were investigated. materials prepared by solid state reaction crystallized in the cubic inverse spinel phase with a very small amount additional RFeO3 as secondary phase. scanning electron micrograph images clearly show grains (∼2μm) which are separated thin grain boundaries. presences all elements confirmed energy dispersive X-ray elemental mapping. frequency variation ε’ shows dispersion, following...