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Proceedings Paper

New method to improve the structure and magneto-optical properties of bismuth garnet films
Author(s): Si Jun Zhang; H. W. Zhang; X. Y. Guo; Feng Ping Zhang; C. L. Xu; B. J. Guo; Dimin Luo; Z. Y. Zhong
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Paper Abstract

A new method to improve the structure and the magnetic-optical (MO) properties of sputtered bismuth garnet films for MO storage has been studied. The method employs high temperature ramp-up rate recurrent annealing as well as quenching in air environment. It results in small grain size (43.0 nm to approximately 30.0 nm), smooth surface, and less bubbles in the garnet film than those with conventional annealing. We discovered that the sample with more recurrent annealing only appeared in garnet phase, and its counterpart with fewer recurrent annealing appeared in garnet phase as well as DyFeO3 phase. Meanwhile the Farady angle and the coercivity increase with the recurrent number due to the increase of volume transitional rate of crystal phase in the film. Using this new method, garnet film has been successfully crystallized with a grain size of about 30.0 nm with excellent magnetic and MO properties.

Paper Details

Date Published: 13 August 1993
PDF: 7 pages
Proc. SPIE 2053, Optical Storage (ISOS '92), (13 August 1993); doi: 10.1117/12.150645
Show Author Affiliations
Si Jun Zhang, Southwest Institute of Applied Magnetics (China)
H. W. Zhang, Univ. of Electronic Science and Technology (China)
X. Y. Guo, Southwest Institute of Applied Magnetics (China)
Feng Ping Zhang, Southwest Institute of Applied Magnetics (China)
C. L. Xu, Southwest Institute of Applied Magnetics (China)
B. J. Guo, Univ. of Electronic Science and Technology (China)
Dimin Luo, Univ. of Electronic Science and Technology (China)
Z. Y. Zhong, Univ. of Electronic Science and Technology (China)


Published in SPIE Proceedings Vol. 2053:
Optical Storage (ISOS '92)

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