Ferromagnetism in two-dimensional Ti0.8 Co0.2 O2 nanosheets

M. Osada, Y. Ebina, K. Fukuda, K. Ono, K. Takada, K. Yamaura, E. Takayama-Muromachi, T. Sasaki

研究成果: Article査読

87 被引用数 (Scopus)

抄録

We have investigated magnetic and magneto-optical properties of two-dimensional (2D) Ti0.8 Co0.2 O2 nanosheet, a new nanosized titanium oxide derived from layered titanates by exfoliation. Despite heavy doped 2D system in the dielectric ground, the multilayer films of Ti0.8 Co0.2 O2 nanosheets exhibit room-temperature ferromagnetism with magnetic moment of 1.4 μB Co. We also observe robust magnetic circular dichroism near the absorption edge at 4 eV, indicating a strong spin polarization in this 2D system. The first-principles study of Ti0.8 Co0.2 O2 nanosheet characterizes the ferromagnetic state with a spin-orbit-induced anisotropy.

本文言語English
論文番号153301
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
73
15
DOI
出版ステータスPublished - 2006
外部発表はい

ASJC Scopus subject areas

  • Condensed Matter Physics

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