Relaxation behaviors of the bismuth-substituted yttrium iron garnet in the microwave range

被引：9

作者：

Hung, D. S. ^{[1
,2
]}

Fu, Y. P. ^{[3
]}

Lee, S. F. ^{[2
]}

Yao, Y. D. ^{[4
]}

Ahad, Faris B. Abdul ^{[2
,5
,6
]}

机构：

[1] Ming Chuan Univ, Dept Informat & Telecommun Engn, Taipei 111, Taiwan

[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan

[3] Natl Dong Hwa Univ, Dept Mat Sci & Engn, Hulien 401, Taiwan

[4] Fu Jen Catholic Univ, Inst Appl Sci & Engn, Taipei 242, Taiwan

[5] Acad Sinica, Nano Sci & Technol Program TIGP, Taipei 115, Taiwan

[6] NTHU, Dept Engn & Syst Sci, Hsinchu 300, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

关键词：

THIN-FILMS;

D O I：

10.1063/1.3337682

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin damping behavior of the bismuth-substituted yttrium iron garnets (Bi(x)Y(3-x)Fe(5)O(12)) prepared by the coprecipitation process was investigated using the ferromagnetic resonant (FMR) in this study. By analyzing the FMR responses, the spin damping coefficient of the x=0.25-1.25 in polycrystalline Bi: YIG (yttrium aluminum garnet) samples was obtained from the 3 dB linewidth of their FMR spectra. The data demonstrated that the damping coefficient started from 3.21 x 10(-3) for x=0.25 and went to its minimum value of 0.31 x 10(-3) for x=0.75. However, the damping coefficient enhanced to 8.55 x 10(-3) with increasing of the bismuth concentration to x=1.25. The results revealed that the spin damping behavior of the Bi: YIG garnets was strongly dependent on a YFeO(3) (111) phase. (C) 2010 American Institute of Physics. [doi:10.1063/1.3337682]

引用

页数：3

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