Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals

Yoichi Ishiwata, Tatsuya Shiraishi, Naoki Ito, Satoshi Suehiro, Tetsuya Kida, Hirofumi Ishii, Yasuhisa Tezuka, Yuji Inagaki, Tatsuya Kawae, Hirotaka Oosato, Eiichiro Watanabe, Daiju Tsuya, Masashi Nantoh, Koji Ishibashi

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)


We have obtained monodisperse (V 1-xCr x) 2O 3 nanocrystals with crystal sizes of 21.0 ± 4.1 nm using organic-phase synthesis. The (V 1- xCr x) 2O 3 nanocrystals clearly show the transition from a corundum structured paramagnetic metal to a monoclinic structured antiferromagnetic insulator in contrast to non-doped V 2O 3 nanocrystals, in which the disappearance of the metal-insulator transition has been observed. We have found that Cr doping works effectively in narrowing the a 1g band, which tends to be broadened by nanocrystallization. This result suggests that chemical doping is useful for control of material phase transitions at the nanoscale.

ジャーナルApplied Physics Letters
出版ステータス出版済み - 1月 23 2012

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)


「Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。