Formation of (001) texture in fe-o underlayered L10 FePt films

P. P. Gu; C. L. Zha; B. Ma; J. P. Wang; Z. Z. Zhang; Q. Y. Jin

doi:10.1109/TMAG.2009.2024321

Formation of (001) texture in fe-o underlayered L1₀ FePt films

P. P. Gu, C. L. Zha, B. Ma, J. P. Wang, Z. Z. Zhang, Q. Y. Jin

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Ll₀ FePt thin films were deposited on an Fe-O underlayer prepared by RF bias sputtering in an oxygen atmosphere for different oxidization time. Very good (001) texture and perfect perpendicular magnetization were obtained in the FePt film on 1-nm-thick Fe-O underlayer after high temperature annealing. The (001) texture evolution was accompanied by fcc-to-fct phase transformation, and both were driven by a recrystallization process. The Fe-O underlayer not only acts as a template, but also provides a stress to help the atom migration during annealing.

Original language	English (US)
Article number	5257346
Pages (from-to)	3594-3597
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2009.2024321
State	Published - Oct 2009

Bibliographical note

Funding Information:
The work was supported by the NSF of China under Grants 60490290, 60678008, 10604016, 50771032, and 50771033, the National Basic Research Program of China under Grant 2009CB929201, and the Innovation Program of Shanghai Municipal Education Commission under Grant 09ZZ03. One author, B. Ma, would like to thank Dr. B. Lu in Seagate for help discussions, and Prof. S. Zhou in the Department of Physics for VSM measurements.

Keywords

Annealing
Fe-O
FePt
Underlayer

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Cite this

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abstract = "Ll0 FePt thin films were deposited on an Fe-O underlayer prepared by RF bias sputtering in an oxygen atmosphere for different oxidization time. Very good (001) texture and perfect perpendicular magnetization were obtained in the FePt film on 1-nm-thick Fe-O underlayer after high temperature annealing. The (001) texture evolution was accompanied by fcc-to-fct phase transformation, and both were driven by a recrystallization process. The Fe-O underlayer not only acts as a template, but also provides a stress to help the atom migration during annealing.",

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AU - Ma, B.

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AU - Zhang, Z. Z.

AU - Jin, Q. Y.

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