Microwave dielectric properties of the BSST ceramics with BaO compositional ratio

BSST계 세라믹스의 BaO 조성비에 따른 마이크로파 유전특성

  • 박인길 (광운대 대학원 전자재료공학과) ;
  • 정장호 (광운대 대학원 전자재료공학과) ;
  • 이성갑 (서남대 공대 전자공학과) ;
  • 이영희 (광운대 공대 전자재료공학과)
  • Published : 1996.01.01

Abstract

Microwave dielectric properties of 0.15(B $a_{x}$S $r_{0.05}$)O-0.15(S $m_{2}$(1-y)N $d_{2y}$) $O_{3}$-0.7Ti $o_{2}$(x=o.9~0.1[mol.], y=6[m/o]) ceramics were investigated with BaO compositional ratio. Sintered density and resistivity of specimens were independent on the BaO compositional ratio. In the specimen with x=0.975[mol.], dielectric constant, quality factor and temperature coefficient of resonant frequency had good values of 76.52, 3001(at 3[GHz]) and +0.71[ppm/.ceg. C], respectively. By comparing with the stoichiometric compositions of 78.14, 2938(at 3[GHz])+14.19[ppm/.ceg. C], dielectric constant and quality factor showed similar properties, but the temperature coefficient of resonant frequency was highly improved. (author). refs., figs., tabs.s.s.

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