Electrical control of Curie temperature in cobalt using an ionic liquid film

被引：128

作者：

Shimamura, K. ^{[1
]}

Chiba, D. ^{[1
,2
]}

Ono, S. ^{[3
]}

Fukami, S. ^{[4
]}

Ishiwata, N. ^{[4
]}

Kawaguchi, M. ^{[1
]}

Kobayashi, K. ^{[1
]}

Ono, T. ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Saitama 3220012, Japan

[3] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan

[4] NEC Corp Ltd, Tsukuba, Ibaraki 3058501, Japan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 12期

关键词：

carrier density; cobalt; Curie temperature; electrochemistry; magnetic thin films; magnetisation; METAL-INSULATOR-TRANSITION; FIELD CONTROL; TRANSISTORS; FERROMAGNETISM; MANIPULATION;

D O I：

10.1063/1.3695160

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electric field effect on magnetization properties and Curie temperature of Co ultra-thin films has been investigated. An electric field is applied to a Co film by using an electric double layer (EDL) formed in a polymer film containing an ionic liquid. The change in the Curie temperature is similar to 100 K by applying the gate voltage of +/-2 V, suggesting that the observed large modifications of magnetization properties are attributed to the significant change in the Curie temperature, which is induced by a large amount of carrier density control due to the formation of the EDL. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3695160]

引用

页数：3

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