Sintering behaviors and dielectric properties of nanocrystalline barium titanate

Kuo Liang Ying, Tsung-Eong Hsien*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Nanometer-scale barium titanate (BaTiO3) powders were prepared via a process consisting of chemical dispersion and physical grinding/mixing. Sintering behaviors, microstructures as well as their correlations to dielectric properties of nano-BaTiO3 sintered at the temperatures ranging from 1100 to 1300 °C for various time spans were investigated. It was found that specific control on sintering condition is required for the nano-BaTiO3 powders to achieve desired microstructure, crystalline phase and dielectric properties of devices. The BaTiO3 sample sintered at 1100 °C for 6 h possesses relatively small grain sizes (about 140 nm), high density (about 95% T.D.) and distinct room-temperature dielectric properties (dielectric constant = 8000; dielectric loss = 5 × 10-3). Hence, in addition to the saving of thermal budget, the adoption of nano-scale ceramic powders in conjunction with appropriate sintering process may dramatically improve the dielectric properties of devices.

Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume138
Issue number3
DOIs
StatePublished - 15 Apr 2007

Keywords

  • Dielectric properties
  • Nano-BaTiO
  • Sintering

Fingerprint Dive into the research topics of 'Sintering behaviors and dielectric properties of nanocrystalline barium titanate'. Together they form a unique fingerprint.

Cite this