Effects of glass components on crystallization and dielectric properties of BST glass-ceramics

Nobuyuki Isaka, Kensuke Ohkawa, Hajime Kiyono, Hidenobu Itoh, Junichi Takahashi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Crystallization behavior was studied for glass powders in which some portions of AlF 3 in the net composition of 60(Ba 0.7 Sr 0.3)TiO 3-25SiO 2-15AlF 3 were replaced with Ga 2O 3 or Bi 2 O 3. The replacement with Ga 2O 3 resulted in a progressive increase in crystallization temperature, which effectively assisted the viscous sintering of glass powders to produce densified BST glass-ceramics at relatively lower temperatures. For the Bi 2O 3-replaced glass powders, an increasing amount of Bi 2O 3 replacement lowered the crystallization temperature and yielded less densified glass-ceramics containing a considerable amount of glassy phase. The temperature dependence of permittivity was estimated for the Ga 2O 3- and Bi 2O 3-replaced glass-ceramics as a function of sintering conditions and the amount of replacement, respectively.

Original languageEnglish
Pages (from-to)1233-1239
Number of pages7
JournalJournal of Materials Science: Materials in Electronics
Issue number12
Publication statusPublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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