Comprehensive study of crystallization and phase formation in (La,Gd)BGeO5 glass

Yoshihiro Takahashi, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The glasses with (25-x) La2O3·xGd2O 3·25B2O3·50GeO2 composition corresponding to the (La,Gd)BGeO5 were prepared, and the substitution effect of gadolinium ions (Gd3+) on crystallization behavior and phase formation was examined by DTA, XRD and Raman techniques in detail. Ferroelectric (La,Gd)BGeO5 phase with hexagonal stillwellite structure were crystallized in the composition range of x = 0-15. Although no significant change in physical properties was observed in the whole composition range, crystallization behavior was drastically changed as the progressive substitution of Gd3+ was carried out (i.e., crystallization of monoclinic phase of (La,Gd)BGeO5 and high-pressure phase of Gd 2Ge2O7 with a triclinic structure). Structure of the glasses and crystallized phases, and the phase formation mechanism were also discussed.

Original languageEnglish
Pages (from-to)1108-1114
Number of pages7
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1358
DOIs
Publication statusPublished - Oct 2008

Keywords

  • Crystallization
  • Glass
  • Phase formation
  • Stillwellite

ASJC Scopus subject areas

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

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