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Influence of substrate temperature on structure, microstructure and magnetic properties of sputtered Fe-Ga thin films

Basumatary, Himalay and Chelyane, Arout J and Rao, Sridhara DV and Kamat, SV and Ranjan, R (2015) Influence of substrate temperature on structure, microstructure and magnetic properties of sputtered Fe-Ga thin films. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 384 . pp. 58-63.

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2015.02.021

Abstract

This paper reports the structure, microstructure and magnetic properties of Fe-Ga thin films deposited using DC magnetron sputtering technique on Si(100) substrate kept at different temperatures. Structural studies employing X-ray diffraction and TEM revealed the presence of only disordered A2 phase in the film. Columnar growth of nanocrystalline grains from the substrate was observed in the film deposited at room temperature. With increase in substrate temperature the grain size as well as surface roughness was found to increase. The magnetization of the films deposited at higher substrate temperatures were Found to saturate at lower magnetic held as compared to the room temperature deposited Film. Coercivity was found to decrease with increasing substrate temperature upto a minimum value of similar to 2 Oe for the film deposited at 450 degrees C and with further increase in substrate temperature it was found to increase. A maximum magnetostriction of 200 mu-strains was also observed for the film deposited at 450 degrees C. (C) 2015 Elsevier B.V. All rights reserved

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Keywords: Magnetostriction; Microstructure; Coercivity; DC magnetron spattering
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 06 May 2015 04:40
Last Modified: 06 May 2015 04:40
URI: http://eprints.iisc.ac.in/id/eprint/51472

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