| Home | E-Submission | Sitemap | Login | Contact Us |  
J. Korean Ceram. Soc. > Volume 30(9); 1993 > Article
Journal of the Korean Ceramic Society 1993;30(9): 723.
Pb(Zn, Mg)_{1/3}Nb_{2/3}O_3$계에서 Columbite Precursors의 화학적 특성이 상생성, 미세화학 및 유전특성에 미치는 영향
조성률, 이규만, 장현명
포항공과대학 재료공학과 정밀세라믹스 공정과학연구실
Effects of the Columbite Precursors on Phase-Formation Characteristics, Microchemistry and Dielectric Properties of Pb(Zn, Mg)_{1/3}Nb_{2/3}O_3$ Ceramics
The mechanism of formation of perovskite phase and the dielectric properties of PZMN[Pb(Zn, Mg)1/3Nb2/3O3] ceramics were examined using two different types of the columbite precursors, (Mg, Zn)Nb2O6 (MZN) and MgNb2O6+ZnNb2O6 (MN+ZN). The formatin of perovskite phase in PbO+MN+ZN system is characterized by an initial rapid formation of Mg-rich perovskite phase, followed by a sluggish formation of Zn-rich perovskite phase. On the other hand, thepyrochlore/perovskite transformation in the PbO+MZN system proceeded uniformly with a spatial homogeneity. The degree of diffuseness of the rhombohedral/cubic phase transitionis higher in the PbO+MN+ZN system than in the PbO+MZN specimen, indicating a broadened compositional distributjion of the B-site catons (Nb+5, Zn+2, Mg+2) in the PbO+MN+ZN system.
Editorial Office
Meorijae Bldg., Suite # 403, 76, Bangbae-ro, Seocho-gu, Seoul 06704, Korea
TEL: +82-2-584-0185   FAX: +82-2-586-4582   E-mail: ceramic@kcers.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Ceramic Society.                      Developed in M2PI