H. Harinaka, Hideaki Takeda, Takashi Nishida, Kiyoshi Uchiyama, T. Shiosaki
{"title":"Fabrication and Characterization of Semiconductive Ceramics using BaTiO3-(Bi1/2K1/2)TiO3 System","authors":"H. Harinaka, Hideaki Takeda, Takashi Nishida, Kiyoshi Uchiyama, T. Shiosaki","doi":"10.1109/ISAF.2007.4393413","DOIUrl":null,"url":null,"abstract":"As a candidate of a lead-free positive temperature coefficient of resistivitiy (PTC) themistor material, barium titanate (BaTiO<sub>3</sub>) -based solid-solution ceramics, BaTiO<sub>3</sub>-(Bi<sub>1/2</sub>K<sub>1/2</sub>)TiO<sub>3</sub> (BBKT100x), have been synthesized by the conventional ceramic fabrication technique. The maximum temperature of the dielectric constant (T<sub>m</sub>) of the BBKTIOOx ceramics monotonously increased with the increasing amount of x. The Tm values of the BBKTIOOx ceramics with x>0.0 were higher than that of BaTiO<sub>3</sub> (=130degC). The peak temperature (T<sub>p</sub>) of the pyroelectric coefficient showed that the ferroelectricity of the BBKT100x ceramics disappeared at Tm. The reduced BBKT5 ceramics show PTC characteristics as well as a semiconductivity.","PeriodicalId":321007,"journal":{"name":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2007.4393413","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
As a candidate of a lead-free positive temperature coefficient of resistivitiy (PTC) themistor material, barium titanate (BaTiO3) -based solid-solution ceramics, BaTiO3-(Bi1/2K1/2)TiO3 (BBKT100x), have been synthesized by the conventional ceramic fabrication technique. The maximum temperature of the dielectric constant (Tm) of the BBKTIOOx ceramics monotonously increased with the increasing amount of x. The Tm values of the BBKTIOOx ceramics with x>0.0 were higher than that of BaTiO3 (=130degC). The peak temperature (Tp) of the pyroelectric coefficient showed that the ferroelectricity of the BBKT100x ceramics disappeared at Tm. The reduced BBKT5 ceramics show PTC characteristics as well as a semiconductivity.
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