Successive phase transformation in stoichiometric glassy Li 2Ge4O9: Isothermal and nonisothermal study

Yoshihiro Takahashi, Jun Kunitomo, Takamichi Miyazaki, Minoru Osada, Takumi Fujiwara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Stoichiometric glassy germanate is an important material in geophysics and materials science. Despite the binary Li2O-GeO2 system being primitive, its crystallization mechanism remains undetermined. In this study, we investigated crystallization and structural ordering in glassy ferroelectric Li2Ge4O9. Using isothermally and nonisothermally prepared samples, we demonstrated that the glassy Li 2Ge4O9 shows no direct structural change to the stoichiometric phase; it rather forms α-GeO2 nanocrystals, i.e., it undergoes successive phase transformation. The results suggest that the metastable immiscibility is related to the ordering that occurs prior to crystallization of the stoichiometric phase.

Original languageEnglish
Article number033512
JournalJournal of Applied Physics
Volume114
Issue number3
DOIs
Publication statusPublished - 2013 Jul 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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