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Densification and dielectric property of B2O3-doped Ba1-xSrxTiO3 graded ceramics

  • Hua Rong Cheng*
  • , Jing Chuan Zhu
  • , Jae Ho Jeon
  • , Zhong Da Yin
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Korea Institute of Machinery and Materials

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of B2O3 dopant amount and sintering temperature on the densification behavior and microstructure of Ba1-xSrxTiO3(x = 0-0.4) was investigated, and different contents of B2O3 were selected for the different composition of Ba1-xSrxTiO3. Then with a series of doped Ba1-xSrxTiO3 powders, graded pellet was fabricated and sintered, and dielectric property was measured. The results show that, the sintering temperature of B2O3-doped Ba1-xSrxTiO3 is effectively lowered at least 100°C compared with that of undoped Ba1-xSrxTiO3, and at 1300°C the ceramic is nearly full densified. After sintering, the Curie temperature zone of graded ceramics is broadened remarkably, and the permittivity-temperature coefficient is greatly decreased, which means the accuracy and stability of components made of such material can be improved.

Original languageEnglish
Pages (from-to)1018-1024
Number of pages7
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume19
Issue number5
StatePublished - Sep 2004
Externally publishedYes

Keywords

  • BaSrTiO
  • Dielectric property
  • Doping
  • Graded ceramics

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