Spontaneous uniaxial strain and disappearance of the metal-insulator transition in monodisperse V 2O 3 nanocrystals

Y. Ishiwata, S. Suehiro, T. Kida, H. Ishii, Y. Tezuka, H. Oosato, E. Watanabe, D. Tsuya, Yuji Inagaki, Tatsuya Kawae, M. Nantoh, K. Ishibashi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Monodisperse V 2O 3 nanocrystals with diameters of 10.4 ± 1.8 nm have been synthesized by organic-phase synthesis. Systematic studies of their lattice parameters, electronic structure, and magnetism have shown the disappearance of the metal-insulator transition. The V 2O 3 nanocrystals show such a contraction along the c axis that the a 1g band is broadened, and mixing of the a 1g and egπ bands is enhanced. We conclude that this spontaneous uniaxial strain is unique for nanocrystals with a large surface area to volume ratio, and it stabilizes the metallic phase by gaining the free energy of electrons.

Original languageEnglish
Article number035449
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number3
DOIs
Publication statusPublished - Jul 30 2012

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Metal insulator transition
axial strain
Nanocrystals
nanocrystals
insulators
metals
Magnetism
Free energy
Lattice constants
contraction
Electronic structure
lattice parameters
free energy
electronic structure
Electrons
synthesis
electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Spontaneous uniaxial strain and disappearance of the metal-insulator transition in monodisperse V 2O 3 nanocrystals. / Ishiwata, Y.; Suehiro, S.; Kida, T.; Ishii, H.; Tezuka, Y.; Oosato, H.; Watanabe, E.; Tsuya, D.; Inagaki, Yuji; Kawae, Tatsuya; Nantoh, M.; Ishibashi, K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 86, No. 3, 035449, 30.07.2012.

Research output: Contribution to journalArticle

Ishiwata, Y. ; Suehiro, S. ; Kida, T. ; Ishii, H. ; Tezuka, Y. ; Oosato, H. ; Watanabe, E. ; Tsuya, D. ; Inagaki, Yuji ; Kawae, Tatsuya ; Nantoh, M. ; Ishibashi, K. / Spontaneous uniaxial strain and disappearance of the metal-insulator transition in monodisperse V 2O 3 nanocrystals. In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 86, No. 3.
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AU - Ishii, H.

AU - Tezuka, Y.

AU - Oosato, H.

AU - Watanabe, E.

AU - Tsuya, D.

AU - Inagaki, Yuji

AU - Kawae, Tatsuya

AU - Nantoh, M.

AU - Ishibashi, K.

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