Composition influence on the microstructures and magnetic properties of FePt thin films

doi:10.1088/1674-1056/22/4/047503

Abstract The Fe_xPt_100-x (10 nm) (x = 31-51) thin films are fabricated on Si (100) substrates by using magnetron sputtering. The highly ordered L1₀ FePt phase is obtained after post-annealing at 700 ℃ in Fe₄₇Pt₅₃ thin film. The sample shows good perpendicular anisotropy with a square loop and a linear loop in the out-of-plane and the in-plane direction, respectively. The variations of the magnetic domains are investigated in the films when the content value of Fe changes from 31% to 51%.

Keywords: FePt coercivity composition magnetic domain

Received: 24 August 2012
Revised: 12 October 2012
Accepted manuscript online:

PACS:	75.30.Gw	(Magnetic anisotropy)
	75.50.Bb	(Fe and its alloys)
	75.50.Ss	(Magnetic recording materials)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61003041, 51071088, and 51171086).

Corresponding Authors: Cao Jiang-Wei
E-mail: caojw@lzu.edu.cn

Cite this article:

Liu Li-Wang (刘立旺), Dang Hong-Gang (党红刚), Sheng Wei (盛伟), Wang Ying (王颖), Cao Jiang-Wei (曹江伟), Bai Jian-Min (白建民), Wei FuLin (魏福林) Composition influence on the microstructures and magnetic properties of FePt thin films 2013 Chin. Phys. B 22 047503

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Composition influence on the microstructures and magnetic properties of FePt thin films

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