H. Takeda, H. Akutsu, M. Zubair, T. Hoshina, T. Tsurumi
{"title":"添加cao的BaTiO3-(Bi1/2Na1/2)TiO3固溶体陶瓷的半导体行为","authors":"H. Takeda, H. Akutsu, M. Zubair, T. Hoshina, T. Tsurumi","doi":"10.1109/ISAF.2012.6297799","DOIUrl":null,"url":null,"abstract":"We report synthesis of BaTiO<sub>3</sub>-(Bi<sub>1/2</sub>Na<sub>1/2</sub>)TiO<sub>3</sub> (BT-BNT) semiconducting ceramics by conventional solid-state reaction method in air atmosphere. By adding CaO into the calcined BT-BNT powder, the resulting ceramics acquires the semiconductivity with the resistivity at room temperature ρ<sub>RT</sub> value of 10<sup>2</sup>-10<sup>3</sup> Ωcm and PTC behavior. The structure analysis using X-ray diffraction method, it was found that the CaO added BT-BNT ceramics consisted of perovskite-type ABO<sub>3</sub> single phase. Chemical composition analysis by inductively coupled plasma spectrometry disclosed a distinct evaporation of Na and Bi during sintering process. The quantity of evaporation of Na was higher than that of Bi. Based on these results, it was suggested that dominant substitution of Ca<sup>2+</sup> for Na<sup>+</sup> in the A site occurred, and then that part of Bi<sup>3+</sup> separated from divalent (Bi<sub>1/2</sub>Na<sub>1/2</sub>)<sup>2+</sup> pairs worked as a donor.","PeriodicalId":20497,"journal":{"name":"Proceedings of ISAF-ECAPD-PFM 2012","volume":"9 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2012-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Semiconducting behavior of CaO-added BaTiO3-(Bi1/2Na1/2)TiO3 solid solution ceramics\",\"authors\":\"H. Takeda, H. Akutsu, M. Zubair, T. Hoshina, T. Tsurumi\",\"doi\":\"10.1109/ISAF.2012.6297799\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We report synthesis of BaTiO<sub>3</sub>-(Bi<sub>1/2</sub>Na<sub>1/2</sub>)TiO<sub>3</sub> (BT-BNT) semiconducting ceramics by conventional solid-state reaction method in air atmosphere. By adding CaO into the calcined BT-BNT powder, the resulting ceramics acquires the semiconductivity with the resistivity at room temperature ρ<sub>RT</sub> value of 10<sup>2</sup>-10<sup>3</sup> Ωcm and PTC behavior. The structure analysis using X-ray diffraction method, it was found that the CaO added BT-BNT ceramics consisted of perovskite-type ABO<sub>3</sub> single phase. Chemical composition analysis by inductively coupled plasma spectrometry disclosed a distinct evaporation of Na and Bi during sintering process. The quantity of evaporation of Na was higher than that of Bi. Based on these results, it was suggested that dominant substitution of Ca<sup>2+</sup> for Na<sup>+</sup> in the A site occurred, and then that part of Bi<sup>3+</sup> separated from divalent (Bi<sub>1/2</sub>Na<sub>1/2</sub>)<sup>2+</sup> pairs worked as a donor.\",\"PeriodicalId\":20497,\"journal\":{\"name\":\"Proceedings of ISAF-ECAPD-PFM 2012\",\"volume\":\"9 1\",\"pages\":\"1-2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-07-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of ISAF-ECAPD-PFM 2012\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISAF.2012.6297799\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of ISAF-ECAPD-PFM 2012","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2012.6297799","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Semiconducting behavior of CaO-added BaTiO3-(Bi1/2Na1/2)TiO3 solid solution ceramics
We report synthesis of BaTiO3-(Bi1/2Na1/2)TiO3 (BT-BNT) semiconducting ceramics by conventional solid-state reaction method in air atmosphere. By adding CaO into the calcined BT-BNT powder, the resulting ceramics acquires the semiconductivity with the resistivity at room temperature ρRT value of 102-103 Ωcm and PTC behavior. The structure analysis using X-ray diffraction method, it was found that the CaO added BT-BNT ceramics consisted of perovskite-type ABO3 single phase. Chemical composition analysis by inductively coupled plasma spectrometry disclosed a distinct evaporation of Na and Bi during sintering process. The quantity of evaporation of Na was higher than that of Bi. Based on these results, it was suggested that dominant substitution of Ca2+ for Na+ in the A site occurred, and then that part of Bi3+ separated from divalent (Bi1/2Na1/2)2+ pairs worked as a donor.
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