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

Research output: Contribution to journalArticle

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Abstract

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.

Original languageEnglish
Article number153301
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number15
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint

Nanosheets
Ferromagnetism
ferromagnetism
titanates
titanium oxides
dichroism
Spin polarization
magnetic moments
Titanium oxides
Multilayer films
Dichroism
Magnetic moments
orbits
optical properties
anisotropy
Orbits
Anisotropy
room temperature
polarization
Optical properties

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Osada, M., Ebina, Y., Fukuda, K., Ono, K., Takada, K., Yamaura, K., ... Sasaki, T. (2006). Ferromagnetism in two-dimensional Ti0.8 Co0.2 O2 nanosheets. Physical Review B - Condensed Matter and Materials Physics, 73(15), [153301]. https://doi.org/10.1103/PhysRevB.73.153301

Ferromagnetism in two-dimensional Ti0.8 Co0.2 O2 nanosheets. / Osada, M.; Ebina, Y.; Fukuda, K.; Ono, K.; Takada, K.; Yamaura, K.; Takayama-Muromachi, E.; Sasaki, T.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 15, 153301, 2006.

Research output: Contribution to journalArticle

Osada, M, Ebina, Y, Fukuda, K, Ono, K, Takada, K, Yamaura, K, Takayama-Muromachi, E & Sasaki, T 2006, 'Ferromagnetism in two-dimensional Ti0.8 Co0.2 O2 nanosheets', Physical Review B - Condensed Matter and Materials Physics, vol. 73, no. 15, 153301. https://doi.org/10.1103/PhysRevB.73.153301
Osada, M. ; Ebina, Y. ; Fukuda, K. ; Ono, K. ; Takada, K. ; Yamaura, K. ; Takayama-Muromachi, E. ; Sasaki, T. / Ferromagnetism in two-dimensional Ti0.8 Co0.2 O2 nanosheets. In: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Vol. 73, No. 15.
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