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Structural and Magnetic Properties of Amorphous Tb-Dy-Fe-Co Thin Films

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Abstract

This paper reports the effect of film thickness (50, 200, 400 and 800 nm) on the structural and magnetic properties of amorphous Tb-Dy-Fe-Co alloy thin films. All the films are found to exhibit perpendicular magnetic anisotropy (PMA) irrespective of the film thickness. The PMA is found to decrease with increase in film thickness due to the decrease in the magnetic texture and anisotropy energy. While the coercivity deduced from the out-of-plane magnetization curve increases with increasing film thickness, the in-plane coercivity exhibits weak thickness dependence. The irreversibility point in the thermo-magnetic curves obtained from field-cooled and zero-field-cooled measurements along the out-of-plane direction is found to shift towards higher temperature compared to the measurements in in-plane directions, indicating the presence of strong PMA.

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Acknowledgments

The authors thank the Director, DMRL, Hyderabad for his constant support and encouragement.

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Authors and Affiliations

  1. Defence Metallurgical Research Laboratory, Hyderabad, India

    Himalay Basumatary, Arout Chelvane Jeyaramane & S. V. Kamat

  2. Department of Materials Engineering, Indian Institute of Science, Bangalore, India

    Himalay Basumatary & Rajeev Ranjan

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  1. Himalay Basumatary
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  2. Arout Chelvane Jeyaramane
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Correspondence to Arout Chelvane Jeyaramane.

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Basumatary, H., Jeyaramane, A.C., Kamat, S.V. et al. Structural and Magnetic Properties of Amorphous Tb-Dy-Fe-Co Thin Films. J Supercond Nov Magn 29, 863–867 (2016). https://doi.org/10.1007/s10948-015-3360-7

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  • DOI: https://doi.org/10.1007/s10948-015-3360-7

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