The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Dielectric Characteristics of $Pb(Sc_{1/2-x} Ta1_{/2+x}) O_{3+x}$ Ceramic System

  • Nam-Kyung Kim (Dept. of Inorg. Mater. Eng., Kyungpook Nat. Univ) ;
  • Dwight D. Viehland (Dept. of Mater. Sci. and Eng., and Mater, Research Laboratory Univ) ;
  • David A. Payne (Dept. of Mater. Sci., and Eng., and Mater. Research Laboratory Univ)
  • Published : 1995.06.01
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Abstract

PST-series spcimens with stoichimetric and nonstoichimtric compositins were prepared and the effects of compositionl modification on phase formation and dielectric presponse were investigated. The phases formed on calcination were mainly perovskite and trace amount of phyrochlore(s), with an increase of the latter phase(s) as the composition became more ononstoichiometric. The sintered samples showed thermal hysteresis and diffuseness in phase transition with a small degree of frequency relaxation. Temperatures corresponding to maximum values of dielectric constant and loss were relatively insensitive to the composition change while the maximum values were very sensitive to that.

Keywords

References

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