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J. Korean Ceram. Soc. > Volume 26(2); 1989 > Article
Journal of the Korean Ceramic Society 1989;26(2): 249.
Pb(Mg1/3Nb2/3)O3계의 유전성에 미치는 BaTiO3첨가량 및 열처리 온도의 영향 (PMN-BaTiO3계 세라믹스의 합성 및 유전성)
윤기현, 강동헌
연세대학교 요업공학과
Influence of BaTiO3 Content and Firing Temperature on the Dielectric Properties of Pb(Mg1/3Nb2/3)O3 Ceramics
Dielectric properties and the stability of the perovskite phase in the Pb(Mg1/3Nb2/3)O3 system have been investigated as a function of amount of BaTiO3 and firing temperature. In the specimens fired at 120$0^{circ}C$, the pyrochlore phase was eliminated by the addition of 10-15m/o BaTiO3 and also the dielectric constant increased. However, the dielectric constant decreased with further addition of BaTiO3 even though no pyrochlore phase was found to be present. The reducing tendency of the pyrochlore phase decreased with lowering the firing temperature in the system of Pb(Mg1/3Nb2/3)O3 with BaTiO3. Dielectric properties in PMN ceramics were affected by the character of the BaTiO3 rather than the pyrochlore phase.
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