Nano-materials design for High-T C ferromagnets of Ti 1-xCoxO 2 nanosheets

Minoru Osada*, Takayoshi Sasaki, Kanta Ono

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We present materials design of high-T C ferromagnetic nanomaterials based on first-principles calculations. Two-dimensional (2D) titania nanosheet, a recently discovered room-temperature (RT) ferromagnetic nanomaterial, is an important target for 2D ferromagnets. In Ti 1-xCo xO 2 nanosheets with Co 2+ oxidation state, the ferromagnetic states are highly stabilized up to x = 0.5 with a modest doping dependence of magnetic moment (~1 μ B/Co). Moreover, we find that tailoring properties could be achieved by tuning Co oxidation states, and the optimally doped Ti 1-xCo xO 2 nanosheets (Co 3+; x = 0.125, 0.25) are found to be an excellent RT half-metallic ferromagnet with a large magnetic moment (~4 μ B/Co). 2D nanosheet is therefore expected to provide a very useful platform for nanoscale spinelectronics devices.

本文言語English
ページ(範囲)936-941
ページ数6
ジャーナルInternational Journal of Applied Ceramic Technology
9
5
DOI
出版ステータスPublished - 2012 9月
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • マーケティング
  • 材料化学
  • 凝縮系物理学

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