The role of symmetry-breaking-induced interface anisotropy in [Fe/Pt]{sub n} multilayer films

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3564952· OSTI ID:21560136

Zhenghua, Li ^[1]; Hailong, Xie; Xi, Liu; Jianmin, Bai; Fulin, Wei ^[1]; Dan, Wei ^[2]; Yoshimura, S; Saito, H ^[3]; Xiaoxi, Liu ^[4]

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1. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000 (China)
2. Lab of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)
3. Center for Geo-environment Science, Faculty of Engineering and Resource Science, Akita University, Tegatagakuen-machi 1-1, Akita 010-8502 (Japan)
4. Department of Information Engineering, Shinshu University, Nagano 380-8553 (Japan)

The FePt films were deposited with [Fe/Pt]{sub n} multilayer structure on preheated Corning 1737F glass substrate using pure Fe and Pt target in a CMS-18 sputtering system. The dependence of FePt's texture and magnetic properties on the multilayer structure was investigated. The XRD patterns indicate that (111) texture is dominant for all [Fe/Pt]{sub n} (n = 8, 16, 20, 32) multilayer films. However, the measured M-H loops show that the perpendicular anisotropy is greatly enhanced in samples with n = 16, 20, and 32. The origin of the increased perpendicular anisotropy of [Fe/Pt]{sub n} multilayer films is related to the contributions of the interfaces, which will be analyzed using the micromagnetic models, with careful discussions of the crystalline and interface anisotropies. Finally, it is confirmed that the Fe/Pt interfaces favor the perpendicular orientation in the multilayer structure.

• OSTI ID: 21560136
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: DOI: 10.1063/1.3564952; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
EPITAXY
FILMS
GLASS
INTERFACES
IRON ALLOYS
LAYERS
MAGNETIC PROPERTIES
PLATINUM ALLOYS
SPUTTERING
SUBSTRATES
SYMMETRY BREAKING
TEXTURE
X-RAY DIFFRACTION
ALLOYS
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
DIFFRACTION
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
SCATTERING
TRANSITION ELEMENT ALLOYS