A5091123068- X-ray Diffraction in Crystallography
- Magnetic Properties and Synthesis of Ferrites
- Chalcogenide Semiconductor Thin Films
- Advanced materials and composites
- Ferroelectric and Piezoelectric Materials
- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- ZnO doping and properties
- Aluminum Alloys Composites Properties
- Gas Sensing Nanomaterials and Sensors
- Multiferroics and related materials
- Advanced ceramic materials synthesis
- Microwave Dielectric Ceramics Synthesis
- Metal and Thin Film Mechanics
- Bone Tissue Engineering Materials
- Dielectric properties of ceramics
- Metallic Glasses and Amorphous Alloys
- Magnetic and transport properties of perovskites and related materials
- Catalytic Processes in Materials Science
- Nuclear materials and radiation effects
- Aluminum Alloy Microstructure Properties
- Iron oxide chemistry and applications
- Advanced Thermoelectric Materials and Devices
- Advanced Condensed Matter Physics
Thai Moogambigai Dental College and Hospital
2025
Dr. M.G.R. Educational and Research Institute
2025
University of Burdwan
2015-2024
Indian Institute of Science Bangalore
2024
Odisha University of Agriculture and Technology
2021
Indian Association for the Cultivation of Science
1987-2015
Government of West Bengal
2015
Ramakrishna Mission Vivekananda Educational and Research Institute
2008
Central Michigan University
2005-2007
State University of New York
2007
All-inorganic perovskite nanocrystals are emergent alternative of organolead halide perovskites. Cesium antimony (Cs3Sb2X9, X = Cl, Br, I) all-inorganic perovskites possessing analogous electronic configuration to the promising materials for optoelectronic applications. We report on a colloidal route synthesis uniform Cs3Sb2Cl9 nanowires with lengths up several microns. have synthesized aspect ratio controlled nanorods same ∼20 nm diameter by tuning precursors and ligands in reaction. The...
Mechanical milling and subsequent annealing in air at temperatures between 210 1200°C have been carried out on high purity ZnO powder to study the defect generation recovery material. Lowering of average grain size (from 76±1to22±0.5nm) as a result has estimated from broadening x-ray lines. Substantial growth milled sample occurs above 425°C temperature. Positron annihilation lifetime (PAL) analysis samples shows distinct decrease positrons very near same temperature zone. As indicated both...
Tuning the functional properties of nanocrystals is an important issue in nanoscience. Here, we are able to tune photocatalytic SnO2 by controlling their size and shape. A structural analysis was carried out using X-ray diffraction (XRD)/Rietveld transmission electron microscopy (TEM). The results reveal that number oxygen-related defects varies upon changing shape nanocrystals, which eventually influences properties. Time-resolved spectroscopic studies carrier relaxation dynamics further...
Recent studies have shown that SnO2-based nanocomposites offer excellent electrical, optical, and electrochemical properties. In this article, we present the facile cost-effective fabrication, characterization testing of a new SnO2-PbS nanocomposite photocatalyst designed to overcome low photocatalytic efficiency brought about by electron-hole recombination narrow photoresponse range. The structure is fully elucidated X-ray diffraction (XRD)/Reitveld refinement, Raman spectroscopy,...
The phase transformation kinetics of high-energy ball-milled monoclinic ZrO 2 have been studied in detail by Rietveld powder structure refinement analysis. In the present study, no stabilizing compound was required to obtain cubic phase. fine-grain milled a planetary ball mill for up several hours at different BPMRs (ball mass ratios): 10:1, 20:1, 35:1 and 40:1. During process milling, is gradually transformed relative abundances respective phases, particle sizes, r.m.s. strains, lattice...
The three-dimensional structure of nanocrystalline magnesium ferrite, MgFe 2 O 4 , prepared by ball milling, has been determined using synchrotron radiation powder diffraction and employing both Rietveld atomic pair distribution function (PDF) analysis. ferrite exhibits a very limited structural coherence length high degree disorder. Nevertheless, the nanoferrite possesses well defined local ordering that may be described in terms spinel-type with Mg 2+ Fe 3+ ions almost randomly distributed...
The detailed understanding of the crystal structure and microstructure nanomaterials is useful to predict properties nanomaterials. SnO2 nanocrystals different shapes like particles, spheres, rods pyramids are chemically synthesized. Here, we report morphologies using X-ray diffraction high-resolution transmission electron microscopy (HRTEM). It interesting note that tetragonal phase found in particle, sphere rod shaped pyramid composed two types orthorhombic phases. Rietveld method has been...
Structural characterization of polyaniline intercalated layered vanadium-oxide xerogel nanocomposites with different morphologies revealed from XRD patterns and FESEM/HRTEM image analyses.
ZnO nanorods are synthesized at room temperature through a simple chemical process without using any template or capping agent.
Co3O4 with spinel structure shows CO oxidation activity at very low temperature under dry conditions. This study aims finding the origin of unique catalytic Co species in based oxides. Although, octahedral site Co3+ have been reported to be active catalysts, there is no solid explanation as why so special compared other metals like Fe having similar redox states. In this study, mainly, three model catalysts including MnCo2O4, MnFe2O4, and CoCr2O4 chosen. A detailed analysis bulk crystal...