Control of ferromagnetism at room temperature in (Ti,Co)O 2- δ via chemical doping of electron carriers

Y. Yamada, T. Fukumura, K. Ueno, M. Kawasaki

研究成果: Article査読

19 被引用数 (Scopus)

抄録

Ferromagnetism at room temperature in (Ti,Co)O 2 - δ was controlled by changing its electron density via chemical doping, where the oxygen vacancy δ served as an electron donor. With increasing the electron density, the ferromagnetic anomalous Hall effect and magnetization emerged from a paramagnetic state, while undergoing an insulator to metal transition. This result supports that the electron carriers mediated the ferromagnetic exchange interaction and is consistent with the electric field effect study on the ferromagnetism recently reported [Y. Yamada, K. Ueno, T. Fukumura, H. T. Yuan, H. Shimotani, Y. Iwasa, L. Gu, S. Tsukimoto, Y. Ikuhara, and M. Kawasaki, Science 332, 1065 (2011)].

本文言語English
論文番号242502
ジャーナルApplied Physics Letters
99
24
DOI
出版ステータスPublished - 2011 12月 12
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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