Education Details

Ph D:

Thesis Title: "Ageing, microstructure and magneto-structural relations in room temperature magnetocaloric materials"

Original title in French: "Etude du vieillissement de matériaux magnétocalorique"

Supervisors: Dr Bernard Chevalier and Dr Olivier Toulemonde

Institute: Institute de Chimie de la Matière Condensée de Bordeaux (ICMCB), CNRS,

Université de Bordeaux, Pessac 33600, FRANCE

Year of Award: 2013

Link for full text

Abstract: Magnetic refrigeration has gained lot of importance and attention as they are highlighted to be environmental friendly, energy efficient. Presently, though at research stage, the magnetic refrigerators are pushed towards realization in domestic application with extensive work on materials and with few working models. One critical issue, the potential resistance to corrosion in case of different class of magnetocaloric materials (Gd6Co1.67Si3, Ni2Mn0.75Cu0.25Ga and Pr0.66Sr0.34MnO3) against the heat transport fluid is addressed. To better understand and improve the observed magnetocaloric properties in Heulser alloys Ni2Mn0.75Cu0.25Ga and to elaborate the same with the magneto-structural relation, studies on (i) cation distribution with in crystal structure and/or (ii) microstructural dependence are presented. Nuclear and magnetic phase diagram based on detailed neutron diffraction and magnetism studies for magnetocaloric perovskite oxide Pr1-xSrxMnO3 (0.25≤x≤0.45) is also presented.

Keywords: Magnetocaloric effect, magnetic refrigeration, magnetocaloric materials, first and second order transition, Magneto-structural relation, corrosion, ageing, spontaneous electrochemical oxidation, perovskite manganite, Nuclear-magnetic phase diagram.


M Sc:

Institute: Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore

Specialization: Solid State Physics

Year of passing: 2005

B Sc:

Institute: Al-Ameen Hazi-Dada First Grade College, Arsikere - 573013, Karnataka, INDIA.

University: University of Mysore

Specialization: Physics, Mathematics and Computer Science

Year of passing: 2003