A5047181469- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Ferroelectric and Piezoelectric Materials
- ZnO doping and properties
- Diamond and Carbon-based Materials Research
- earthquake and tectonic studies
- Dielectric properties of ceramics
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Transition Metal Oxide Nanomaterials
- Microwave Dielectric Ceramics Synthesis
- Multiferroics and related materials
- Ga2O3 and related materials
- Electronic and Structural Properties of Oxides
- Electrical Fault Detection and Protection
- Semiconductor materials and devices
- Lightning and Electromagnetic Phenomena
- Metal and Thin Film Mechanics
- Magnetic and transport properties of perovskites and related materials
- Carbon Nanotubes in Composites
- Advanced Memory and Neural Computing
- Magnetic Properties and Synthesis of Ferrites
- Electrical and Thermal Properties of Materials
National Institute of Technology Rourkela
2012-2024
Texas State University
2022-2024
Indian Institute of Technology Madras
2024
Jadavpur University
2009-2023
Savitribai Phule Pune University
2020
University of Calcutta
2020
SRM University
2020
Indian Institute of Technology Kharagpur
2014
North China Electric Power University
2013
National Institute of Technology Durgapur
2009-2012
Ultrawide bandgap ZnGa2O4 (ZGO) thin films were grown on sapphire (0001) substrates at various growth temperatures with a perspective to investigate the electrical and optical characteristics required for high-power electronic applications. Due variation in vapor pressure of Zn Ga, severe loss was observed during pulsed laser deposition, which solved by using zinc-rich Zn0.98Ga0.02O target. A pure phase single-crystalline ZGO film obtained deposition temperature 750 °C an oxygen 1 × 10−2...
Novel phase Q-carbon thin films exhibit some intriguing features and have been explored for various potential applications. Herein, we report the growth of different structures (i.e., filaments, clusters, microdots) by varying laser energy density from 0.5 to 1.0 J/cm2 during pulsed annealing amorphous diamond-like carbon with sp3-sp2 compositions. These unique nano- microstructures demonstrate exceptionally stable electrochemical performance cyclic voltammetry, galvanostatic...
Abstract Integrated structural, petrological and geochronological study on a suite of granulites from the central part Eastern Ghats Belt (EGB), India unveils polyphase tectonothermal evolution. We document (a) M 1 ultrahigh temperature (UHT) metamorphism (∼1000°C at 6.5–8.5 kbar) an anticlockwise P – T trajectory simultaneously with early deformations D –D 2 involving partial melting, (b) cooling down to ∼ 800°C, 6 kbar that produced variety coronae/symplectites (M 1R ), (c) unrelated...
The inverse spinel nickel aluminate micro-particles was successfully synthesized via solid-state synthesis techniques. single phase cubic structure with space group Fd3m of the as-prepared sample entrenched from Rietveld refinement x-ray diffraction pattern. In addition, photoluminescence (PL) and FTIR spectra were also performed to give strong evidence its pure formation. narrow hysteresis m–h loop UV-DRS at room temperature demonstrate weak ferromagnetic semiconducting nature saturation...
In this paper, we report the excellent field emission properties of Q-carbon and analyze its characteristics through structural, morphological, electronic property correlations, supported by density functional theory (DFT) simulation studies. The emitters show impressive stable properties, such as a low turn-on electric ∼2.38 V/μm, high current ∼33 μA/cm2, critical ∼2.44 V/μm for transition from linear region to saturation in F–N plot. outstanding are attributed (i) unique sp2/sp3 mixture...
Microstructural NiO–SnO2 nano-ceramic matrix was synthesized via a solgel auto-combustion technique with perspective to investigate its noteworthy electric field emission and temperature-induced conduction anomaly. Exceptional performance of nickel-tin oxide composites discovered low turn-on 3.9 V/μm threshold 5.30 good current density 110.44 μA/cm2 stability. Density functional theory employed estimate local work function (Φ) 3.365 eV, the enhancement factor (β) obtained as 1570 by...
Thermally induced dielectric and conductivity properties of an Sn-doped β-Ga2O3 (−201) single crystal were investigated by frequency-domain impedance spectroscopy in the frequency window from 100 Hz to 1 MHz with temperatures between 293 873 K. The plane-orientated crystalline nature presence Sn dopant confirmed X-ray diffraction (XRD) photoelectron (XPS) spectroscopy. Two different trends spectra have been discussed modulation relaxation times semiconductor metallic transition after ∼723 K...
In high voltage (HV) electrical power system, variety of solid, liquid and gaseous materials are used for insulation purpose to protect the incipient failure inside HV equipment.Among these solid is widely equipment system.Most insulating not perfect in all respect contains always some impurities.The presence air bubble one such impurities highly undesirable type which causes a local weak zone insulator.Insulation gradually degrades insulator due cumulative effect electrical, chemical...