Anisotropy-Graded 1}} FePt(001) Magnetic Films Obtained by Graded Working Pressures

We herein investigate the performance of L1 0 -FePt(001) films consisting of magnetically anisotropic-graded FePt layers grown by gradient working pressure (P w ). The graded structures typically consist of 5 nm thick FePt hard layer followed by five sequential layers of 1 nm thick graded-FePt layer...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2015-11, Vol.51 (11), p.1-4
Main Authors: Yi-Hung Lin, Jen-Hwa Hsu, Saravanan, P., An-Cheng Sun, Po-Cheng Kuo
Format: Article
Language:English
Subjects:
Anisotropy
Deposition
Exchange
Ferrous alloys
Intermetallics
Iron compounds
Magnetic anisotropy
Magnetic films
magnetic films and multilayers
magnetic measurements
Magnetic recording
Media
metals and alloys
Morphology
Platinum compounds
Thermal stability
X-ray diffraction
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Summary:We herein investigate the performance of L1 0 -FePt(001) films consisting of magnetically anisotropic-graded FePt layers grown by gradient working pressure (P w ). The graded structures typically consist of 5 nm thick FePt hard layer followed by five sequential layers of 1 nm thick graded-FePt layers deposited with P w of 30, 20, 10, 7, and 3 mtorr, respectively. The structural and magnetic properties of P w -graded-FePt layers thus fabricated on glass substrates are compared with that of those grown at different deposition temperatures, T d of 300 °C, 350 °C, 400 °C, and 450 °C. The FePt(P w )-graded films exhibited a very high (001)-texture, island-like morphology, and strong perpendicular magnetic anisotropy and these performances are found to be consistent with that of the L1 0 -FePt(001) hard layer. For T d
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2015.2435054