Formation of a Cr3+-rich luminescent thin phase along a grain boundary of α-Al2O3

Yuki Kezuka, Eita Tochigi, Naoya Shibata, Chiwon Moon, Shingo Kanehira, Kazuyuki Hirao, Yuichi Ikuhara

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)


    An α-Al2O3 bicrystal doped with Cr3+ was fabricated by diffusion bonding at high temperatures. It was found that a ruby phase with approximately 200nm thickness was formed along the grain boundary. This thin phase shows Cr3+:Al2O 3-induced luminescence, confirmed by confocal micro-luminescence spectroscopy.

    Original languageEnglish
    Pages (from-to)620-622
    Number of pages3
    JournalJournal of the Ceramic Society of Japan
    Issue number1391
    Publication statusPublished - 2011 Jul


    • Alumina
    • Bicrystal
    • Grain boundary
    • Luminescence
    • Ruby
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry

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