Orientation-controlled nonepitaxial L1{sub 0} FePt thin films

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4862721· OSTI ID:22273888

Dang, Honggang; Liu, Liwang; Hao, Liang; Jin, Tianli; Liu, Mingfeng; Cao, Jiangwei; Bai, Jianmin; Wang, Ying; Wei, Fulin ^[1]

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1. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000 (China)

We report an orientation-controlled FePt thin films grown nonexpitaxially on oxidized Si substrates without using any underlayers. After 700 °C annealing, the FePt single layer with thickness less than 10 nm shows good (001) texture and perpendicular anisotropy. The scanning electron microscope images indicate that these films are composed of isolated islands. For the films thicker than 20 nm, the films become continuous and (111) orientation appears. The transition of film texture relates to the change of morphology of the films. Finally, a theoretical mode based on minimizing surface energy is proposed to explain the texture variation in the films.

• OSTI ID: 22273888
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
ANNEALING
IMAGES
INTERMETALLIC COMPOUNDS
IRON
MORPHOLOGY
ORIENTATION
PLATINUM
SCANNING ELECTRON MICROSCOPY
SUBSTRATES
SURFACE ENERGY
TEXTURE
THICKNESS
THIN FILMS