Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8152662 | Journal of Magnetism and Magnetic Materials | 2018 | 24 Pages |
Abstract
TbFeCo thin films were grown at different substrate temperatures on Siâ¯ã1 0 0ãâ¯substrates to engineer their structure, microstructure, magnetic anisotropy and magnetostriction. Structural studies showed an amorphous structure for the as-deposited film. However, films deposited at higher substrate temperatures exhibited formation of Tb2(Fe,Co)17 and FeCo phases. Magnetization studies displayed presence of in-plane magnetic anisotropy for all the films. In addition to this, strong out-of-plane magnetic anisotropy co-existing with in-plane component has been observed for the film grown at 400â¯Â°C. These observations were further confirmed by the magnetic microscopy studies which showed strong magnetic phase contrast for the film processed at 400â¯Â°C. Consequently, the magnetostriction calculated from tip deflection measurements was found to be very small for this film. A maximum magnetostriction of about 300â¯ppm has been realized for the film grown at 550â¯Â°C owing to the presence of in-plane magnetic anisotropy, enhancement in crystallization and relaxation of stresses.
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Condensed Matter Physics
Authors
K. Umadevi, A. Talapatra, J. Arout Chelvane, Mithun Palit, J. Mohanty, V. Jayalakshmi,