Microstructures and Dielectric Properties of Low Temperature Cofired BiNbO4–ZnNb2O6 Ceramics with Ag-Electrode
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概要
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0.9BiNbO4–0.1ZnNb2O6 ceramics with the sintering agent, CuO–V2O5, were sintered at low firing temperatures of 850–900 °C. The degradation of dielectric loss in the cofiring process with the Ag electrode has been studied with the change of the sintering conditions. It was found that the degradation occurred primarily due to the formation of pores and second phases. After Ag-electrode application and subsequent cofiring, silver was detected at the interface of BiNbO4–ZnNb2O6/electrode. X-ray diffraction analysis of the BiNbO4–ZnNb2O6 ceramics cofired with Ag-electrode showed a second phase formation. This reaction revealed an interaction between the silver and the niobium. The microwave dielectric properties of the 0.9BiNbO4–0.1ZnNb2O6 ceramics cofired with Ag electrode with increasing sintering time were associated with an increase in porosity and second phase formation including Ag and Nb ions.
- 2005-03-15
著者
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Yoon Ki
Department Of Biotechnology The University Of Tokyo
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Lee Byoung
Department Of Ceramic Engineering Yonsei University
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Lee Hong
Department Of Bio-resources And Pnu-special Animal Biotechnology Center College Of Natural Resources & Life Science Pusan National University
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Yoon Ki
Department of Ceramic Engineering, Yonsei University, 134 Shinchondong, Sudaemungu, Seoul 120-749, Korea
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Lee Byoung
Department of Ceramic Engineering, Yonsei University, 134 Shinchondong, Sudaemungu, Seoul 120-749, Korea
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