Nanograin formation of GaAs by high-pressure torsion

Yoshifumi Ikoma, Yoshimasa Ejiri, Kazunori Hayano, Katsuhiko Saito, Qixin Guo, Zenji Horita

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

Grain refinement of GaAs was achieved by application of severe plastic deformation through high-pressure torsion (HPT). Ultrafine-grained structures including nanograins were produced by the HPT processing under 24 GPa. An intense photoluminescence (PL) peak in the near infrared corresponding to the band gap of GaAs disappeared after the HPT processing but subsequent annealing gave rise not only to restoration of the original band-gap-related peak but also to an additional PL peak in the visible part of the spectrum on account of quantum confinement in the nanograins.

本文言語英語
ページ(範囲)1-8
ページ数8
ジャーナルPhilosophical Magazine Letters
94
1
DOI
出版ステータス出版済み - 11 20 2013

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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