Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5350101 | Applied Surface Science | 2014 | 6 Pages |
Abstract
This paper reports the effects of surfactant Bi atomic diffusion on the microstructure evolution and resulted property manipulation in FePt spintronic films by the quantitative studies of X-ray photoelectron spectroscopy and positron annihilation spectroscopy. The defect density in the FePt layer, which was tunable by varying the thermal treatment temperatures, was found to be remarkably enhanced correlated with the Bi atomic diffusion behavior. The observed defect density evolution substantially favors Fe(Pt) atomic migrations and lowers the energy barrier for atomic ordering transition, resulting in a great improvement of hard magnet property of the films.
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Authors
Chun Feng, Xujing Li, Fen Liu, Qiang Wang, Meiyin Yang, Chongjun Zhao, Kui Gong, Peng Zhang, Bao-Yi Wang, Xing-Zhong Cao, Guanghua Yu,