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

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number043103
JournalApplied Physics Letters
Volume100
Issue number4
DOIs
Publication statusPublished - Jan 23 2012

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nanocrystals
insulators
metals
aluminum oxides
synthesis
crystals

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Ishiwata, Y., Shiraishi, T., Ito, N., Suehiro, S., Kida, T., Ishii, H., ... Ishibashi, K. (2012). Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals. Applied Physics Letters, 100(4), [043103]. https://doi.org/10.1063/1.3679396

Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals. / Ishiwata, Yoichi; Shiraishi, Tatsuya; Ito, Naoki; Suehiro, Satoshi; Kida, Tetsuya; Ishii, Hirofumi; Tezuka, Yasuhisa; Inagaki, Yuji; Kawae, Tatsuya; Oosato, Hirotaka; Watanabe, Eiichiro; Tsuya, Daiju; Nantoh, Masashi; Ishibashi, Koji.

In: Applied Physics Letters, Vol. 100, No. 4, 043103, 23.01.2012.

Research output: Contribution to journalArticle

Ishiwata, Y, Shiraishi, T, Ito, N, Suehiro, S, Kida, T, Ishii, H, Tezuka, Y, Inagaki, Y, Kawae, T, Oosato, H, Watanabe, E, Tsuya, D, Nantoh, M & Ishibashi, K 2012, 'Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals', Applied Physics Letters, vol. 100, no. 4, 043103. https://doi.org/10.1063/1.3679396
Ishiwata Y, Shiraishi T, Ito N, Suehiro S, Kida T, Ishii H et al. Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals. Applied Physics Letters. 2012 Jan 23;100(4). 043103. https://doi.org/10.1063/1.3679396
Ishiwata, Yoichi ; Shiraishi, Tatsuya ; Ito, Naoki ; Suehiro, Satoshi ; Kida, Tetsuya ; Ishii, Hirofumi ; Tezuka, Yasuhisa ; Inagaki, Yuji ; Kawae, Tatsuya ; Oosato, Hirotaka ; Watanabe, Eiichiro ; Tsuya, Daiju ; Nantoh, Masashi ; Ishibashi, Koji. / Metal-insulator transition sustained by Cr-doping in V 2O 3 nanocrystals. In: Applied Physics Letters. 2012 ; Vol. 100, No. 4.
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