Preparation of polycrystalline BaTi2O5 ferroelectric ceramics

Guo jun Li, Rong Tu, Takashi Goto

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Polycrystalline BaTi2O5 (BT2) was prepared by solid state sintering in air using BaCO3 and TiO2 as starting materials. A rod-like BT2 sintered bodies in a single phase were obtained above 1025 °C by adding 5 wt.% B2O3. The densification of BT2 sintered bodies decreased with increasing sintering temperature. The maximum permittivity of BT2 sintered body was 640 at the Curie temperature (Tc) of 461 °C and the frequency of 100 kHz. The addition of B2O3 was effective to obtain BT2 in a single phase at low temperatures with elongated microstructure and to improve the permittivity, indicating the formation of preferred orientation at low temperature was related with liquid-phase sintering mechanism.

Original languageEnglish
Pages (from-to)2280-2282
Number of pages3
JournalMaterials Letters
Volume63
Issue number27
DOIs
Publication statusPublished - 2009 Nov 15

Keywords

  • Ceramics
  • Ferroelectrics
  • Microstructure
  • Sintering
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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