Microwave dielectric properties and microstructure of

Cheng Liang Huang, Yao Chung Chen

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The microstructure and microwave dielectric properties of barium samarium titanium oxide Ba2-xSm4+2x/3Ti8+yO24+2y (x= 0.1,y=0∼2) ceramics (BST) were investigated. The optimum compositions of BST ceramics were synthesized and discussed base on the structure formula of the tungsten-bronze-type crystal phase. Differential thermal analysis (DTA) was used to select the suitable sintering temperatures. The relative dielectric constant of the BST compositions saturated in a range from 63 to 85. Q × f values of 8500-13000 (GHz) were obtained for various y values in dense samples. The temperature coefficient of resonant frequency tf was adjusted from a negative -12 ppm per °C value to a positive value 17 ppm per °C. X-ray diffraction, SEM and EDS analysis were used to investigate the microstructure and correlate its relationship with microwave dielectric properties of BST ceramics

Original languageEnglish
Pages (from-to)106-112
Number of pages7
JournalMaterials Science and Engineering A
Volume345
Issue number1-2
DOIs
Publication statusPublished - 2003 Mar 25

All Science Journal Classification (ASJC) codes

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

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