A5008055028- ZnO doping and properties
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Phase-change materials and chalcogenides
- Transition Metal Oxide Nanomaterials
- Photochemistry and Electron Transfer Studies
- Radiation Shielding Materials Analysis
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Mechanical and Optical Resonators
- Advanced X-ray and CT Imaging
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Luminescence and Fluorescent Materials
- Mineralogy and Gemology Studies
- Electronic and Structural Properties of Oxides
- Advanced Fiber Optic Sensors
- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Material Science and Thermodynamics
- Ga2O3 and related materials
- Nuclear materials and radiation effects
Guru Nanak Dev University
2012-2022
Indian Institute of Management Amritsar
2016
University of Oklahoma
2008
The work is important for the development of semiconductor devices which may create new dimensionality to control and achieve high temperature ferromagnetism.
Gamma ray shielding ability of WO3 borate glasses is analyzed by using the Phy-X/PSD software. Mass attenuation coefficient gets enhanced with addition tungsten oxide resulting in lowering values MFP, HVL, TVL and EBF at 10 mol % as compared to many commercial radiation glasses/concretes. The higher value FNRCS (∑R) studied than concretes shows their neutron ability. sample highest most suitable for making materials. OPD, OMV, n¯c, nb dbb indicate rigid stable glass structure due formations...
The present study reports the impact of thermal annealing on structural, optical and magnetic properties WO3 nanostructures, synthesized using an acid precipitation method by, employing various spectroscopic measurements. X-ray diffraction Raman measurements confirmed orthorhombic structure as dried WO3·H2O monoclinic nanopowders annealed at or above 500 °C. morphological characterization shows formation different microstructures like nanosheets, nanoplatelets nanocuboids in micro-scale with...
The present study focuses on the structural-optical correlation of dilute Fe doped ZnO nano-particles synthesized via low temperature chemical route. Polycrystalline Hexagonal wurtzite structure was confirmed from x-ray diffraction. Lattice parameters calculated using Scherrer's method are appended with substitutional doping induced deformations, leading to dopant-defect broadening, lattice strain and decreased crystallanity modified W-H analysis. direct peak broadening defect formation,...
Abstract Compounds of undoped and samarium (Sm) doped ZnO have been prepared by standard solid‐state reaction method. X‐ray diffraction ( XRD ), Williamson‐Hall (W‐H) analysis, Transmission Electron Microscopy TEM temperature‐dependent electrical dielectric studies done to characterize these materials. Inclusion Sm as dopant in hexagonal wurtzite changes the lattice parameters a small extent with some aggregation at higher concentration. Also, mean particle sizes ZnO:Sm compounds showed an...
The present study aims to analyze the tunability of photonic emissions as a function excitation wavelengths in Fe/Sm co-doped ZnO phosphors. We have investigated up-conversion (UC) and down-conversion (DC) luminescences detail along with possible channels for energy transfer their local electronic structures. These phosphors are polycrystalline hexagonal wurtzite structure, co-doping ions leads 3D-pyramid like morphology transform flower-shaped nanorods. Further, from UV–Vis spectra, it is...
Glass samples of compositions xAl O -(30- ) 2 3 x Li CO –70B with varying from 0 to 8% mole fraction are prepared by melt quench technique. Decrease in the band gap 3.12 2.91 eV for lithium borate glasses an increase Al content has been observed and discussed. The FTIR spectral studies have pointed out conversion structural units BO . Due formation 4 AlO units, changes atomic structure 6 composition
Background: Spectroscopic studies in the past have exposed that PbO-B2O3 glasses are mostly classified as non-crystalline materials. These prove to good host for incorporating RE (rare earth) and transition metal oxides due its low phonon energy, large ion Polarizability higher covalency. TM's widely used glass their two or more valence states. states affect optical well structural properties. Due commercial importance, B2O3 is former. It frequently a dielectric material. The metals...
The samples of Zn1-xNixO (x= 0.00 and 0.05) were prepared using coprecipitation method annealed at different temperatures. effect Ni ion substitution on the structural optical properties has been studied X-ray Diffraction, UV-Visible, Photoluminescence Magnetic measurements. XRD measurements demonstrate that all are wurtzite polycrystalline single phase in nature, ruling out presence any secondary formation. Ultraviolet visible showed a decrease band gap with increase annealing temperature...
A non-contact and low-cost nanomaterial based fiber-optic sensor is developed for measuring large values of electric currents. The magnetic field, generated by the current, changes refractive index a liquid in which particles are suspended. change converted to intensity light transmitted an evanescent field fiber optic sensor. proportional magnitude current thus can be measured resultant light.