抄録
Molecularly-thin nanosheets are ultimate two-dimensional (2D) nanomaterials potentially giving unusual physical and chemical properties due to the strong 2D quantum and surface effects. Here, it is demonstrated that 1.5-nm-thick ZnO nanosheets exhibit greatly enhanced room-temperature ferromagnetism. Saturation magnetization value of the nanosheets with intercalated dodecyl sulfate layers is approximately 100 times that of ZnO mesocrystals. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties, which reveals significance of interfacial states to engineer functional properties of nanosheet-based hybrid materials. Dense integration of interfacial ferromagnetic centers in the lamellar structure gives enhanced ferromagnetism to ZnO nanosheets. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 3140-3145 |
| ページ数 | 6 |
| ジャーナル | Advanced Functional Materials |
| 巻 | 23 |
| 発行部数 | 25 |
| DOI | |
| 出版物ステータス | Published - 2013 7 5 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Biomaterials
- Electrochemistry
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
これを引用
Enhanced and engineered d0 ferromagnetism in molecularly-thin zinc oxide nanosheets. / Taniguchi, Takaaki; Yamaguchi, Kazuhiro; Shigeta, Ayako; Matsuda, Yuki; Hayami, Shinya; Shimizu, Tetsuya; Matsui, Takeshi; Yamazaki, Teruo; Funatstu, Asami; Makinose, Yukihiro; Matsushita, Nobuhiro; Koinuma, Michio; Matsumoto, Yasumichi.
：: Advanced Functional Materials, 巻 23, 番号 25, 05.07.2013, p. 3140-3145.研究成果: Article
}
TY - JOUR
T1 - Enhanced and engineered d0 ferromagnetism in molecularly-thin zinc oxide nanosheets
AU - Taniguchi, Takaaki
AU - Yamaguchi, Kazuhiro
AU - Shigeta, Ayako
AU - Matsuda, Yuki
AU - Hayami, Shinya
AU - Shimizu, Tetsuya
AU - Matsui, Takeshi
AU - Yamazaki, Teruo
AU - Funatstu, Asami
AU - Makinose, Yukihiro
AU - Matsushita, Nobuhiro
AU - Koinuma, Michio
AU - Matsumoto, Yasumichi
PY - 2013/7/5
Y1 - 2013/7/5
N2 - Molecularly-thin nanosheets are ultimate two-dimensional (2D) nanomaterials potentially giving unusual physical and chemical properties due to the strong 2D quantum and surface effects. Here, it is demonstrated that 1.5-nm-thick ZnO nanosheets exhibit greatly enhanced room-temperature ferromagnetism. Saturation magnetization value of the nanosheets with intercalated dodecyl sulfate layers is approximately 100 times that of ZnO mesocrystals. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties, which reveals significance of interfacial states to engineer functional properties of nanosheet-based hybrid materials. Dense integration of interfacial ferromagnetic centers in the lamellar structure gives enhanced ferromagnetism to ZnO nanosheets. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties.
AB - Molecularly-thin nanosheets are ultimate two-dimensional (2D) nanomaterials potentially giving unusual physical and chemical properties due to the strong 2D quantum and surface effects. Here, it is demonstrated that 1.5-nm-thick ZnO nanosheets exhibit greatly enhanced room-temperature ferromagnetism. Saturation magnetization value of the nanosheets with intercalated dodecyl sulfate layers is approximately 100 times that of ZnO mesocrystals. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties, which reveals significance of interfacial states to engineer functional properties of nanosheet-based hybrid materials. Dense integration of interfacial ferromagnetic centers in the lamellar structure gives enhanced ferromagnetism to ZnO nanosheets. Anion exchange with dodecyl phosphate layers strongly suppresses ferromagnetic ordering as a result of surface defect passivation while maintaining bulk-like n-type semiconducting properties.
KW - ferromagnetism
KW - hybrid materials
KW - layered materials
KW - nanosheets
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=84879769564&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879769564&partnerID=8YFLogxK
U2 - 10.1002/adfm.201202704
DO - 10.1002/adfm.201202704
M3 - Article
AN - SCOPUS:84879769564
VL - 23
SP - 3140
EP - 3145
JO - Advanced Materials for Optics and Electronics
JF - Advanced Materials for Optics and Electronics
SN - 1057-9257
IS - 25
ER -