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J. Korean Ceram. Soc. > Volume 39(11); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(11): 1113.
doi: https://doi.org/10.4191/kcers.2002.39.11.1113
Metal-citrate Process를 이용한 마이크로파 유전체용 (Pb0.5Ca0.5)(Fe0.5Nb0.5)O3 나노 분말의 저온 합성
이동욱, 원종한, 심광보, 강승구1, 현부성2
한양대학교 세라믹공학과
1경기대학교 재료공학과
2요업기술원 나노세라믹센터
Low Temperature Synthesis of the Microwave Dielectric (Pb0.5Ca0.5)(Fe0.5Nb0.5)O3 Nano Powders by the Metal-citrate Process
Dong-Wook Lee, Jong-Han Won, Kwang-Bo Shim, Seung-Gu Kang1, Boo-Sung Hyun2
Department of Ceramic Engineering, Hanyang University
1Department of Materials Engineering, Kyunggi University
2Nano Ceramics Center, Korea Institute of Ceramic Engineering & Technology
Nano sized $(Pb_{0.5}Ca_{0.5})(Fe_{0.5}Nb_{0.5})O_3$ (PCFN) powders with the stoichiometric composition and the uniform size distribution were successfully synthesized by the metal-citrate process through the calcination of the polymeric precursor which consisted of the metal ions and the organic network. The crystallization of the initial amorphous powders began at $400{circ}$ and completed at $700{circ}$. The pyrochlore phase was detected caused by the dissociation of PbO above $900{circ}$. Single phase perovskite PCFN powders with 40 nm size and uniform shape were obtained through the calcination at $700{circ}$.
Key words: Nano sized powders, PCFN, Metal-citrate process
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