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자료유형
학술저널
저자정보
Wang, Chien-Min (Materials Research Laboratories, Industrial Technology Research Institute) Chen, San-Yuan (Materials Research Laboratories, Industrial Technology Research Institute)
저널정보
한국재료학회 Fabrication and Characterization of Advanced Materials Fabrication and Characterization of Advanced Materials 제2권 제3호
발행연도
1995.1
수록면
941 - 948 (8page)

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The structure evolution of perovskite phase Pb[(Mg<SUB>x</SUB>Zn<SUB>1-x</SUB>0<SUB>1</SUB>3/Nb<SUB>2</SUB>3/]O<SUB>3</SUB> (abbreviated as PZMN) was found to be highly dependent on its precursors' strong tendency of forming pyrochlore phase in the mixture of raw materials. Three major pyrochlore compositions, Pb<SUB>2</SUB>Nb<SUB>2</SUB>O<SUB>7</SUB>,Pb<SUB>3</SUB>Nb<SUB>2</SUB>O<SUB>8</SUB> and Pb<SUB>3</SUB>Nb<SUB>4</SUB>O<SUB>13</SUB>, were characterized and analyzed to understand their roles in the formation of perovskite PZMN phase. It was discovered that Pb<SUB>3</SUB>Nb<SUB>2</SUB>O<SUB>8</SUB> pyrochlore phase could catalyze the formation of perovskite phase in Pb-based relaxors. Based on phase structure evolution, a preparation method for forming high dielectric constant PZMN ceramics without using common stabilizers such as SrTiO<SUB>3</SUB> was proposed. With pre-synthesized perovskite PMN acting as stabilizer in the formation of Zn-rich PZMN having almost 100% perovskite content and a maximum dielectric constant of 22000. A ternaryphase diagram of PMN-PZN-SrTiO<SUB>3</SUB> was further constructed to investigate the perovskite develop,emt and its related electrical properties.

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