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Proceedings Paper

RF-sputtered Bi-substituted iron garnet composite films for visible-range magneto-optics
Author(s): M. Nur-E-Alam; M. Vasiliev; K. Alameh; V. A. Kotov
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Paper Abstract

We report on the synthesis of new magneto-optical materials with excellent optical and magneto-optical (MO) properties for visible-range and near-infrared applications. Bi-substituted composite garnet films fabricated with excess bismuth oxide content using RF co-sputtering and conventional oven-annealing processes are found to possess simultaneously a record-high MO quality and strong uniaxial magnetic anisotropy. The films demonstrate nearly-square hysteresis loops with specific Faraday rotations of up to 10.1 deg/μm at 532 nm and up to 2.6 deg/μm at 635 nm, which are significantly larger than these measured in garnet films of the same composition prepared without extra bismuth oxide content. Record-high MO figures of merit are demonstrated in our composite garnet materials due to a significant reduction in the optical absorption coefficients achieved across the visible spectral range, thus making garnet-oxide composites highly attractive for use in a range of magneto-optical applications.

Paper Details

Date Published: 2 December 2009
PDF: 8 pages
Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76311F (2 December 2009); doi: 10.1117/12.850998
Show Author Affiliations
M. Nur-E-Alam, Edith Cowan Univ. (Australia)
M. Vasiliev, Edith Cowan Univ. (Australia)
K. Alameh, Edith Cowan Univ. (Australia)
V. A. Kotov, Institute of Radio Engineering and Electronics (Russian Federation)

Published in SPIE Proceedings Vol. 7631:
Optoelectronic Materials and Devices IV
Jian-Jun He; Guang-Hua Duan; Fumio Koyama; Ming C. Wu, Editor(s)

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