Frequency dependence of coercivity in nickel and Co-Fe-B thin film for DC to 100 kHz region

被引：0

作者：

Toyoki, K. ^{[1
,2
]}

Matsui, S. ^{[1
]}

Shiratsuchi, Y. ^{[1
,2
]}

Endo, Y. ^{[3
,4
]}

Nakatani, R. ^{[1
,2
]}

机构：

[1] Osaka Univ, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Inst Open & Transdisciplinary Res Initiat, Spintron Res Network Div, Suita, Suita, Osaka 5650871, Japan

[3] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

[4] Tohoku Univ, Ctr Sci & Innovat Spintron CSIS, Org Adv Studies, Sendai, Miyagi 9808577, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2023年 / 62卷 / SB期

关键词：

soft magnetic material; magnetization behavior; anisotropic magnetoresistance; frequency dependence of coercivity; MAGNETIZATION REVERSAL DYNAMICS; HYSTERESIS DYNAMICS; MAGNETORESISTANCE; TEMPERATURE;

D O I：

10.35848/1347-4065/ac918a

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To investigate the magnetization process in the intermediate frequency region, the frequency dependences of coercivities in Ni and Co-Fe-B thin films were determined by anisotropic magnetoresistance measurements up to similar to 160 kHz. In the low-frequency region (<5 kHz) the coercivity of Co-Fe-B was lower than that of Ni. However, the increasing rate of the coercivity in Ni was lower than that in Co-Fe-B. Consequently, above 19 kHz, the coercivity of Ni was lower than one of Co-Fe-B. Considering the basic material properties, better soft magnetic properties of Ni compared with Co-Fe-B should arise from the higher Walker breakdown field. This difference was mainly due to the Gilbert damping constant.

引用

页数：6

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