Ferromagnetic Properties in Co-Substituted Titania Nanosheets

Abstract:

Two-dimensional (2D) Ti1-xCoxO2 nanosheet, a recently discovered ferromagnic nanomaterial, has been investigated by magnetic and magneto-optical measurements. The multilayer films of Ti0.8Co0.2O2 nanosheets exhibit room-temperature ferromagnetism with magnetic moment of 1.4 μ B/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 Ti1-xCoxO2 nanosheet characterizes the ferromagnetic state with a spin-orbit-induced anisotropy.

• Periodical: Key Engineering Materials (Volume 388)
• Pages: 119-122
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.388.119
• Online since: September 2008
• Authors: Minoru Osada, Yasuo Ebina, Kazunori Takada, Takayoshi Sasaki
• Keywords: Ferromagnetic, First-Principle Calculations, Magneto-Optical Effect, Titania Nanosheet

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