Precipitation of Pt nanocrystallites from BaO-TiO 2-GeO 2 remelted glass

Hirokazu Masai, Katsumi Hamaguchi, Yoshiyuki Suzuki, Kenichiro Iwasaki, Rie Ihara, Yoshihiro Takahashi, Takumi Fujiwara

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We have examined the correlation between the thermal and optical properties of 30BaO-15TiO 2-55GeO 2 glass and its mode of preparation, i.e., the different temperatures at which the glass melts were held in a molten state (melt temperature). The changes in the absorption coefficients and the refractive indices, which increased with the increasing melt temperature, were reversible, and temperature-dependent structures were formed in the glass. In the remelted glass with short remelting duration, a black coloration and the precipitation of Pt nanocrystallites were observed. The precipitated Pt nanocrystallites acted as nucleation sites to induce crystallization by heat treatment at 10°C below the glass transition temperature.

Original languageEnglish
Article number123513
JournalJournal of Applied Physics
Issue number12
Publication statusPublished - 2012 Jun 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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