Understanding thickness dependent magnetic properties of Tb-Fe thin films

Basumatary, Himalay and Chelvane, J. Arout and Rao, D.V. Sridhara and Talapatra, A. and Mohanty, J. and Kumar, Deepak and Singh, Vajinder and Kamat, S.V. and Ranjan, Rajeev (2021) Understanding thickness dependent magnetic properties of Tb-Fe thin films. Journal of Alloys and Compounds, 869. p. 159571. ISSN 09258388

Full text not available from this repository. (Request a copy)


In this paper, we have attempted to understand the magnetic behaviour of Tb-Fe thin films grown with different thicknesses through detailed electron microscopy, magnetization measurements and magnetic domain imaging studies. Tb-Fe thin films over a range of thicknesses such as 50, 100, 200, 400, 600 and 800 nm were deposited on Si<100>substrates using electron beam evaporation technique. Grazing incidence X-ray diffraction studies revealed that all the films were amorphous in nature. Microstructural studies using transmission electron microscopy showed columnar channel of voids extending from substrate to film surface. Magnetization measurements along the in-plane and out-of-plane direction indicated presence of out-of-plane magnetic anisotropy in all the films. Saturation magnetization and coercivity measured along the out-of-plane direction were found to vary with the thickness of the films. A very high coercivity of ~2000 mT was obtained for the film having thickness of 400 nm. Magnetic anisotropy calculations indicated a strong perpendicular magnetic anisotropy for the 400 nm thick film. The variation of magnetic anisotropy with film thickness was correlated with the magnetic domain patterns observed in the films using magnetic force microscopy.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Mohanty, Jyoti RanjanUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Binary alloys; Coercive force; High resolution transmission electron microscopy; Iron alloys; Magnetic domains; Saturation magnetization; Substrates; Thick films; Thin films
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 29 Jul 2021 11:35
Last Modified: 29 Jul 2021 11:35
URI: http://raiith.iith.ac.in/id/eprint/8563
Publisher URL: http://doi.org/10.1016/j.jallcom.2021.159571
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 8563 Statistics for this ePrint Item