Soft magnetic properties of Co-Cr-O granular films

被引：43

作者：

Morikawa, T ^{[1
]}

Suzuki, M ^{[1
]}

Taga, Y ^{[1
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Aichi 48011, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 11期

关键词：

D O I：

10.1063/1.367654

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Excellent soft magnetic properties have been achieved for Co-Cr-O granular films with nanoscaled grains of Co distributed in the amorphous intergranular regions of Cr2O3. A rapid decrease in coercivity has been observed with the volume fraction of Co, and the minimum value of 0.39 Oe was obtained at 75.5 vol % of Co without postannealing. This value is one order of magnitude smaller than those of Co-Al-O and Co-Si-O sputtered films. The saturation magnetization, in-plane anisotropy field, and permeability below 800 MHz are 11.8 kG, 80 Oe, and 141, respectively. Because of its large saturation magnetization and in-plane anisotropy, the resonance frequency is estimated at 2.9 GHz. Therefore, Co-Cr-O granular films can be used in the high frequency devices operating over 2 GHz. (C) 1998 American Institute of Physics.

引用

页码：6664 / 6666

页数：3

共 10 条

[1] High resistive nanocrystalline Fe-M-O (M=Hf, Zr, rare-earth metals) soft magnetic films for high-frequency applications [J].