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

Basumatary, Himalay ; Arout Chelvane, J. ; Sridhara Rao, D.V. ; Kamat, S.V. ; Ranjan, R. (2015) Influence of substrate temperature on structure, microstructure and magnetic properties of sputtered Fe–Ga thin films Journal of Magnetism and Magnetic Materials, 384 . pp. 58-63. ISSN 0304-8853

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

Related 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 field as compared to the room temperature deposited film. Coercivity was found to decrease with increasing substrate temperature upto a minimum value of ~2 Oe for the film deposited at 450 °C and with further increase in substrate temperature it was found to increase. A maximum magnetostriction of 200 µ-strains was also observed for the film deposited at 450 °C.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:122985
Deposited On:01 Sep 2021 08:32
Last Modified:01 Sep 2021 08:32

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