Crystallization of tungstenbronze-type Ba2NaNb5O 15 in high-Nb2O5-content glass: An inelastic light scattering study

Yoshihiro Takahashi, Nobuhiro Fujie, Minoru Osada, Hirokazu Masai, Rie Ihara, Takumi Fujiwara

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10 Citations (Scopus)

Abstract

In situ observations of phonon Raman and Boson scattering were performed in high- Nb2O5 -content barium-sodium aluminophosphate glass, which crystallizes tungstenbronze-type Ba2NaNb 5O15 (BNN), during heating and subsequent cooling processes in order to examine the BNN crystallization dynamics and phase transitions. It is suggested that NbO6 clusters/cohesive regions are present and are subjected to stress by the surrounding aluminophosphate network prior to crystallization of the BNN phase. Furthermore, in the cooling period, a successive phase transition (4/mmm→4mm→mm2) of the BNN phase was observed in the glass-ceramics, implying the possibility of producing functional glass-ceramics with ferroelastic properties.

Original languageEnglish
Article number103519
JournalJournal of Applied Physics
Volume108
Issue number10
DOIs
Publication statusPublished - 2010 Nov 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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