Effect of A-Site Substitution and Firing Temperature on Microstructure and Electrical Properties of BaTiO_3 Semiconducting Ceramics Fired by Reduction-Reoxidation Method
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概要
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The effects of A-site substitution and firing temperature on the microstructure and electrical properties of BaTiO_3 semiconducting ceramics fired by the reduction-reoxidation method were experimentally investigated. Ba ions were substituted with Ca or (Sr_<0.5>Pb_<0.5>). Various microstructures were obtained by varying the firing temperature in reducing atmosphere. Using these samples, the recovery of the characteristics of positive temperature coefficient of resistivity (PTCR) was evaluated. In particular, the minimum grain size required for the reoxidation of only grain boundaries during annealing in oxygen atmosphere in the cooling process was investigated.
- 社団法人応用物理学会の論文
- 1997-09-30
著者
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Igarashi Hideji
Department Of Electrical Engineering National Defense Academy Yokosuka
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Tashiro Shinjiro
Department Of Electrical Engineering The National Defence Academy
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OSONOI Akihiro
Department of Electronic Engineering, The National Defense Academy
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Osonoi Akihiro
Department Of Electronic Engineering The National Defense Academy
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