Bi-substituted LPE garnet films with FMR linewidth as small as YIG

Journal Article · Mon Feb 01 00:00:00 EST 1988 · IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/TJMJ.1988.4563654· OSTI ID:6910447

Tamada, H; Kaneko, K; Okamoto, T ^[1]

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1. Sony Corp., Yokohama (Japan). Research Lab.

This paper reports highly Bi-substituted LPE garnet films, Bi{sub 0.85}Lu{sub 2.15}FE{sub 5}O{sub 12} and Fi{sub 1.4}Y{sub 1.6}Fe{sub 5}O{sub 12}, with FMR linewidths as small as that of YIG, grown using only Bi{sub 2}O{sub 3} as a flux. Substitution of Al for FE causes a sharp increase in {Delta}H. The minimum values of {Delta}H obtained were 1.5 Oe for Bi{sub 0.85}Lu{sub 2.15}Fe{sub 5}O{sub 12} films and 0.73 Oe for Bi{sub 1.45}Y{sub 1.6}Fe{sub 5}O{sub 12} films, which are the smallest values reported to date for such heavily Bi-substituted garnet films. This may be ascribed to the fact that no Pb was included in the films. It was experimentally verified that MSSW propagation is possible for Bi{sub 0.85}Lu{sub 2.15}Fe{sub 5}O{sub 12} films. These films are very promising for MSW-based optical waveguide devices, since they have a specific Faraday rotation ten times larger than that of YIG, as well as a very small optical absorption coefficient at a wavelength of 1.3 {mu}m.

• OSTI ID: 6910447
• Journal Information: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (USA), Vol. 3:2; ISSN 0882-4959
• Country of Publication: United States
• Language: English

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