Structure and Isotropic High-Frequency Response of Co-HfN Nanogranular Films

被引：4

作者：

Cao, Yang ^{[1
]}

Zhang, Yiwen ^{[1
]}

Ohnuma, Shigehiro ^{[1
,2
]}

Kobayashi, Nobukiyo ^{[2
]}

Masumoto, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai, Miyagi 9808578, Japan

[2] DENJIKEN, Res Inst Electromagnet Mat, Sendai, Miyagi 9820827, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 11期

关键词：

Cobalt alloys; frequency response; perpendicular magnetic ansotropy; soft magnetic materials; SOFT-MAGNETIC PROPERTIES; GRANULAR THIN-FILMS; FINE PARTICLES; DENSITY; FIELD;

D O I：

10.1109/TMAG.2015.2438003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Co-HfN nanogranular films with different Co content were deposited, to obtain high-frequency soft magnetic properties. The films exhibit perpendicular magnetic anisotropy over a wide composition range. The coercivity is similar to 15-75 Oe, which is attributed to the growth-induced Co columnar structure. Both hysteresis loops and magnetic force microscopy images demonstrate that the films are magnetically in-plane isotropic. The permeability and ferromagnetic resonance frequency of the Co58Hf14N28 films are 40 and 2 GHz, respectively, which is consistent with the theoretical calculation based on Landau-Lifshitz-Gilbert (L.L.G) equation. The films consist of crystallized Co nanogranules and amorphous HfN matrix.

引用

页数：4

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