| 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 |
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| ABSTRACT |
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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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