Abstract
We investigated the local electronic structures of a molecularly thin ferromagnetic Ti0.8 Co0.2 O2 nanosheet by means of x-ray nanospectroscopy with spectroscopic photoemission and low energy electron microscopy. By analyzing the Co 2p x-ray absorption and photoemission spectra, the chemical state of doped Co ions in individual Ti0.8 Co0.2 O2 nanosheet was found to be Co2+ low-spin state, which is consistent with previous magnetization data and first-principles calculation [M. Osada, Phys. Rev. B 73, 153301 (2006)]. Furthermore, we employed photoelectron emission microscopy to image the variation in chemical states in Ti0.8 Co0.2 O2 nanosheets with different stacking structures and clarified the identical Co2+ low-spin state in monolayer and overlapped cases.
| Original language | English |
|---|---|
| Article number | 093112 |
| Journal | Applied Physics Letters |
| Volume | 93 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
X-ray nanospectroscopic characterization of a molecularly thin ferromagnetic Ti1-x Cox O2 nanosheet. / Kotani, Yoshinori; Taniuchi, Toshiyuki; Osada, Minoru; Sasaki, Takayoshi; Kotsugi, Masato; Guo, F. Z.; Watanabe, Yoshio; Kubota, Masato; Ono, Kanta.
In: Applied Physics Letters, Vol. 93, No. 9, 093112, 2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - X-ray nanospectroscopic characterization of a molecularly thin ferromagnetic Ti1-x Cox O2 nanosheet
AU - Kotani, Yoshinori
AU - Taniuchi, Toshiyuki
AU - Osada, Minoru
AU - Sasaki, Takayoshi
AU - Kotsugi, Masato
AU - Guo, F. Z.
AU - Watanabe, Yoshio
AU - Kubota, Masato
AU - Ono, Kanta
PY - 2008
Y1 - 2008
N2 - We investigated the local electronic structures of a molecularly thin ferromagnetic Ti0.8 Co0.2 O2 nanosheet by means of x-ray nanospectroscopy with spectroscopic photoemission and low energy electron microscopy. By analyzing the Co 2p x-ray absorption and photoemission spectra, the chemical state of doped Co ions in individual Ti0.8 Co0.2 O2 nanosheet was found to be Co2+ low-spin state, which is consistent with previous magnetization data and first-principles calculation [M. Osada, Phys. Rev. B 73, 153301 (2006)]. Furthermore, we employed photoelectron emission microscopy to image the variation in chemical states in Ti0.8 Co0.2 O2 nanosheets with different stacking structures and clarified the identical Co2+ low-spin state in monolayer and overlapped cases.
AB - We investigated the local electronic structures of a molecularly thin ferromagnetic Ti0.8 Co0.2 O2 nanosheet by means of x-ray nanospectroscopy with spectroscopic photoemission and low energy electron microscopy. By analyzing the Co 2p x-ray absorption and photoemission spectra, the chemical state of doped Co ions in individual Ti0.8 Co0.2 O2 nanosheet was found to be Co2+ low-spin state, which is consistent with previous magnetization data and first-principles calculation [M. Osada, Phys. Rev. B 73, 153301 (2006)]. Furthermore, we employed photoelectron emission microscopy to image the variation in chemical states in Ti0.8 Co0.2 O2 nanosheets with different stacking structures and clarified the identical Co2+ low-spin state in monolayer and overlapped cases.
UR - http://www.scopus.com/inward/record.url?scp=51349122543&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51349122543&partnerID=8YFLogxK
U2 - 10.1063/1.2976550
DO - 10.1063/1.2976550
M3 - Article
AN - SCOPUS:51349122543
VL - 93
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 9
M1 - 093112
ER -