Sher Singh Meena

Bhabha Atomic Research Centre, Solid State Physics Division, Faculty Member

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Sher Singh Meena currently works at the Solid State Physics Division, Bhabha Atomic Research Centre. Sher Singh Meena does research in Condensed Matter Physics, Materials Science, and Solid State Physics. Their current projects are 'Rechargeable battery materials', Magnetic nanoparticles for hyperthermia and technological applications, Low dimensional magnetic systems, Catalyst, Spinel Ferrites, Hexaferrites, Alloys, nano-composites, Prussian blue, Carbides etc.
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Phone: +91 22 2559 3846
Address: Solid State Physics Division
Bhabha Atomic Research Centre
Trombay, Mumbai 400085
India

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Inter University Accelerator Centre

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Inter University Accelerator Centre

Akbar Bagri

Massachusetts Institute of Technology (MIT)

Metalurgi Fisik (Physical Metallurgy) Reza Fadhila

State University of Medan

Arun Thirumurugan

University of Chile

Marcelo Coronado

Universidad Tecnológica de Panamá

Neeru Bhagat

Symbiosis International University

Arif Maulana

Institut Teknologi Sepuluh Nopember

Rajesh Jha

Colorado School of Mines

Arkadiusz Zarzycki

Institute of Nuclear Physics, Polish Academy of Sciences

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Structural and magnetic properties of nanocrystalline equi-atomic spinel high-entropy oxide (AlCoFeMnNi)3O4 synthesised by microwave assisted co-precipitation technique

Journal of Alloys and Compounds, Oct 1, 2021

Abstract Single phase equi-atomic (Al0.2Co0.2Fe0.2Mn0.2Ni0.2)3O4 high-entropy oxide (HEO) having ... more Abstract Single phase equi-atomic (Al0.2Co0.2Fe0.2Mn0.2Ni0.2)3O4 high-entropy oxide (HEO) having spinel structure was synthesised employing simple and cost effective microwave assisted co-precipitation technique, followed by calcination at 500 °C. The material obtained was highly crystalline and stable at higher temperatures. The uniformity in elemental distribution was apprehended through STEM-EDS elemental mapping. The X-ray photoelectron spectroscopy confirmed +3 ionic state for Fe and Al, while other elements oxidised to higher ionic states to maintain charge neutrality. Ferrimagnetic behaviour was confirmed for the obtained HEO through magnetic characterisations.

Investigation of structural, magnetic and dielectric properties of gallium substituted Z-type Sr3Co2-Ga Fe24O41 hexaferrites for microwave absorbers

Journal of Alloys and Compounds, May 1, 2020

Polycrystalline Sm 3 (Fe 1−x Al x) 5 O 12 (x =0, 0.1, 0.2, 0.3, 0.4) samples were prepared in sin... more Polycrystalline Sm 3 (Fe 1−x Al x) 5 O 12 (x =0, 0.1, 0.2, 0.3, 0.4) samples were prepared in single phase form. Rietveld analysis of X-ray diffraction patterns shows that samples crystallize in cubic structure (space group: Ia3d) with a systematic decrease in lattice constant with Al doping. Magnetization measurements show that all these samples exhibit ferrimagnetic transition whose transition temperature (T c) decreases from 562 K for x =0 to 350 K for x =0.4 due to the dilution of Fe 3+-O-Fe 3+ networks. In addition to that they undergo spin reorientation transition at T SR~ 70 K with considerable magnetic irreversibility below T SR. Interestingly the x =0.4 sample undergoes magnetic compensation at 26 K. Improvement of frequency response of dielectric constant (′) and loss tangent (tan) is observed upon Al doping in a wide frequency range of 10 2-10 9 Hz.

Sher Singh Meena

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