Fabrication of BaTi2O5 glass-ceramics with unusual dielectric properties during crystallization

Jianding Yu, Yasutomo Arai, Tadahiko Masaki, Takehiko Ishikawa, Shinichi Yoda, Shinji Kohara, Hiroshi Taniguchi, Mitsuru Itoh, Yoshihiro Kuroiwa

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

A 2-mm-diameter glass sphere of ferroelectric BaTi2O5 was fabricated from melt using containerless processing. The glass structure was analyzed by high-energy X-ray diffraction using an incident photon energy of 113.5 keV, indicating that distorted Ti-O polyhedra, with average coordination number (NTi-o) of approximately 5, presented in the glass. Above the glass transition temperature (972 K), three successive phase transitions, from glass to a metastable a phase at 972 K, then to a metastable β phase at 1038 K, and finally to a stable monoclinic γ phase above 1100 K, were observed. At the crystallization temperature of the a phase, the permittivity jumped instantaneously by more than 1 order of magnitude, reaching a peak of 1.4 × 107. This interesting phenomenon, occurring near the crystallization temperature, has important technical implications for obtaining an excellent dielectric glass-ceramic through controlled crystallization of BaTi 2O5 glass.

Original languageEnglish
Pages (from-to)2169-2173
Number of pages5
JournalChemistry of Materials
Volume18
Issue number8
DOIs
Publication statusPublished - 2006 Apr 18
Externally publishedYes

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Glass ceramics
Crystallization
Dielectric properties
Fabrication
Glass
Metastable phases
Ferroelectric materials
Permittivity
Photons
Phase transitions
X ray diffraction
Temperature
Processing

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Fabrication of BaTi2O5 glass-ceramics with unusual dielectric properties during crystallization. / Yu, Jianding; Arai, Yasutomo; Masaki, Tadahiko; Ishikawa, Takehiko; Yoda, Shinichi; Kohara, Shinji; Taniguchi, Hiroshi; Itoh, Mitsuru; Kuroiwa, Yoshihiro.

In: Chemistry of Materials, Vol. 18, No. 8, 18.04.2006, p. 2169-2173.

Research output: Contribution to journalArticle

Yu, J, Arai, Y, Masaki, T, Ishikawa, T, Yoda, S, Kohara, S, Taniguchi, H, Itoh, M & Kuroiwa, Y 2006, 'Fabrication of BaTi2O5 glass-ceramics with unusual dielectric properties during crystallization', Chemistry of Materials, vol. 18, no. 8, pp. 2169-2173. https://doi.org/10.1021/cm0525555
Yu, Jianding ; Arai, Yasutomo ; Masaki, Tadahiko ; Ishikawa, Takehiko ; Yoda, Shinichi ; Kohara, Shinji ; Taniguchi, Hiroshi ; Itoh, Mitsuru ; Kuroiwa, Yoshihiro. / Fabrication of BaTi2O5 glass-ceramics with unusual dielectric properties during crystallization. In: Chemistry of Materials. 2006 ; Vol. 18, No. 8. pp. 2169-2173.
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AU - Yoda, Shinichi

AU - Kohara, Shinji

AU - Taniguchi, Hiroshi

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