High-pressure densification of fluoride, GeS2 and silicate glasses

Yoji Kawamoto, Koichi Miyauchi, Masanori Shojiya, Shinichi Sakida, Naoyuki Kitamura

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Densification of glasses having different chemical-bond properties and also different structures have been examined by treating ionic ZrF4-based fluoride glasses, mixed ionic and covalent SiO2-based oxide glasses, and a covalent GeS2 sulfide glass at temperatures of about three-quarters of their respective glass-transition temperatures under pressures up to 9 GPa. The densities of GeS2 glass and silicate glasses of SiO2 contents > 50 mol% increased with increasing applied pressure. In ZrF4-based glasses and silicate glasses with SiO2 contents <50 mol%, on the other hand, the densities increased until an applied pressure around 3 GPa, the maximum densities were measured at pressures around 3 GPa, and then decreased with increasing pressure. The pressure dependences of permanent densification observed in the latter glasses are a permanent densification that has not been reported to our knowledge.

Original languageEnglish
Pages (from-to)128-133
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume284
Issue number1-3
DOIs
Publication statusPublished - May 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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