Precipitation of heterogeneous nanostructures: Metal nanoparticles and dielectric nanocrystallites

Hirokazu Masai, Yoshihiro Takahashi, Takumi Fujiwara, Yomei Tokuda, Toshinobu Yoko

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Heterogeneous precipitation of nanocrystallites of metallic Bi and anatase was observed in CaO-Bi2O3-B2O3- Al2O3-TiO2 glass-ceramics. Addition of AlN reduced the Bi2O3 to Bi metal nanoparticles, which were uniformly dispersed in the glass. After heat-treatment of the Bi-precipitated glass around the glass transition temperature, nanocrystalline anatase precipitated out without aggregation of the Bi metal particles. It was found that the anatase nanocrystal size was affected by the distance between a nanocrystal and a precipitated Bi nanoparticle. The glass-ceramic produced is a functional material containing a random dispersion of different types of nanoparticles with different dielectric constants.

Original languageEnglish
Article number023503
JournalJournal of Applied Physics
Volume108
Issue number2
DOIs
Publication statusPublished - 2010 Jul 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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