Electrical and Optical Properties of PLZT Ceramics Prepared by Flux Method

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J. Korean Ceram. Soc. > Volume 23(4); 1986 > Article

Journal of the Korean Ceramic Society 1986;23(4): 62.

용융염 합성법에 의한 PLZT 세라믹스의 제작과 그 전기적.광학적 특성

남효덕

영남대학교 공과대학 전자공학과

Electrical and Optical Properties of PLZT Ceramics Prepared by Flux Method

ABSTRACT

$(Pb_{1-x} La_x)(Zr_{0.65} Ti_{0.35})_{1-x/4}O_3$ (PLZT X/65/35) powders were prepared by molten salt synthesis using NaCl-K Cl and conventional calcining of oxides. The effects of molten salt on formation and charactrization of PLZT powder and on dielectric piezolectric and optical properties of PLZT ceramics were studied, The completed PLZT powder formation in the presence of fused salt was attained at 50-10$0^{circ}C$ lower temperature than that in solid state reaction and the particle size of the powder made by molten salt synthesis was markedly increased with increasing calcining temperature. The substitution of Na and/or K ions in NaCl-KCl for Pb ion in process of molten salt synthesis was increased with increasing La concentration Z. These substituted Na and/or K ions were identified as the origins of decreasing coupl-ing factor and optical transmittance of PLZT ceramics.