Abstract
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.
Original language | English |
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Pages (from-to) | 936-941 |
Number of pages | 6 |
Journal | International Journal of Applied Ceramic Technology |
Volume | 9 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2012 Sept |
Externally published | Yes |
ASJC Scopus subject areas
- Ceramics and Composites
- Marketing
- Materials Chemistry
- Condensed Matter Physics