Kumar, S Vinodh and Singh, R K and Seenithurai, S and Bysakh, Sandip and Raja, M Manivel and Mahendran, M (2015) Phase structure and magnetic properties of the annealed Mn-rich Ni-Mn-Ga ferromagnetic shape memory thin films. Materials Research Bulletin, 61. pp. 95-100. ISSN 0025-5408

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The phase structure and magnetic behavior of sputter deposited and annealed Ni-Mn-Ga thin films of varying thickness have been studied. The as-deposited films exhibited quasi-amorphous structure having paramagnetic nature at room temperature. After annealing at 873 K for 30 min ferromagnetic ordering is recovered and the quasi-amorphous structure has changed to nanocrystalline structure. At low film thickness (<300 nm), the annealed films exhibited a mixture of cubic austenite (L2(1)) and martensite phases while at thickness greater than 1000 nm ordered L1(2) phase was observed. The magnetic properties were found to strongly depend on the structure of the constituent phases in the films. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type: Article
Subjects: Microstructure and Characterization
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Dec 2015 12:16
Last Modified: 30 Dec 2015 12:16
URI: http://cgcri.csircentral.net/id/eprint/3018

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