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 |
|---|---|
| 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 Sep |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
- Marketing
- Materials Chemistry
- Condensed Matter Physics
Cite this
Nano-materials design for High-T C ferromagnets of Ti 1-xCoxO 2 nanosheets. / Osada, Minoru; Sasaki, Takayoshi; Ono, Kanta.
In: International Journal of Applied Ceramic Technology, Vol. 9, No. 5, 09.2012, p. 936-941.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nano-materials design for High-T C ferromagnets of Ti 1-xCoxO 2 nanosheets
AU - Osada, Minoru
AU - Sasaki, Takayoshi
AU - Ono, Kanta
PY - 2012/9
Y1 - 2012/9
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84866025206&partnerID=8YFLogxK
U2 - 10.1111/j.1744-7402.2012.02783.x
DO - 10.1111/j.1744-7402.2012.02783.x
M3 - Article
AN - SCOPUS:84866025206
VL - 9
SP - 936
EP - 941
JO - International Journal of Applied Ceramic Technology
JF - International Journal of Applied Ceramic Technology
SN - 1546-542X
IS - 5
ER -