Nanoscale effects on the stability of the λ-Ti3O 5 polymorph

Rie Makiura, Yasuhiro Takabayashi, Andrew N. Fitch, Hiroko Tokoro, Shin Ichi Ohkoshi, Kosmas Prassides

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The nanocrystalline valency-delocalized λ-phase of the binary oxide Ti3O5 has recently emerged as a promising phase-change material that exhibits rapid photo-reversible optical and resistance changes at ambient temperature. Nanoscaling caused the monoclinic-λ to monoclinic charge-ordered β-phase structural instability to shift to considerably lower temperatures compared to the bulk material, and led to a broad thermal hysteresis. The structural transformation was accompanied by a large change in volume and large lattice relaxations, which imply the presence of strong electron-phonon coupling. We attribute the suppression of the phase transition to the enhanced surface energy on the nanoscale.

本文言語English
ページ(範囲)1886-1890
ページ数5
ジャーナルChemistry - An Asian Journal
6
7
DOI
出版ステータスPublished - 2011 7月 4

ASJC Scopus subject areas

  • 生化学
  • 有機化学

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