Finlay D Morrison, Derek C Sinclair, Anthony R West
{"title":"la掺杂BaTiO3陶瓷的掺杂机理及电学性能","authors":"Finlay D Morrison, Derek C Sinclair, Anthony R West","doi":"10.1016/S1466-6049(01)00128-3","DOIUrl":null,"url":null,"abstract":"<div><p>The electrical properties of Ba<sub>1−<em>x</em></sub>La<sub><em>x</em></sub>Ti<sub>1−<em>x</em>/4</sub>O<sub>3</sub> ceramics where <em>x</em><span>≤0.20 were investigated by impedance spectroscopy after heat treatment in O</span><sub>2</sub>, Ar and air at 1350°C. Samples heated in O<sub>2</sub> were electrically insulating with very high maximum permittivities, ∼25,000 at <em>x</em>=0.06 and exhibited significant ‘relaxor-type’ behaviour at <em>x</em>=0.10. Samples heated in Ar were semiconducting for all <em>x</em> whereas air heated samples were electrically inhomogeneous. Semiconductivity in these materials is attributed to oxygen loss as opposed to La-donor doping.</p></div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 8","pages":"Pages 1205-1210"},"PeriodicalIF":0.0000,"publicationDate":"2001-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00128-3","citationCount":"121","resultStr":"{\"title\":\"Doping mechanisms and electrical properties of La-doped BaTiO3 ceramics\",\"authors\":\"Finlay D Morrison, Derek C Sinclair, Anthony R West\",\"doi\":\"10.1016/S1466-6049(01)00128-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The electrical properties of Ba<sub>1−<em>x</em></sub>La<sub><em>x</em></sub>Ti<sub>1−<em>x</em>/4</sub>O<sub>3</sub> ceramics where <em>x</em><span>≤0.20 were investigated by impedance spectroscopy after heat treatment in O</span><sub>2</sub>, Ar and air at 1350°C. Samples heated in O<sub>2</sub> were electrically insulating with very high maximum permittivities, ∼25,000 at <em>x</em>=0.06 and exhibited significant ‘relaxor-type’ behaviour at <em>x</em>=0.10. Samples heated in Ar were semiconducting for all <em>x</em> whereas air heated samples were electrically inhomogeneous. Semiconductivity in these materials is attributed to oxygen loss as opposed to La-donor doping.</p></div>\",\"PeriodicalId\":100700,\"journal\":{\"name\":\"International Journal of Inorganic Materials\",\"volume\":\"3 8\",\"pages\":\"Pages 1205-1210\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00128-3\",\"citationCount\":\"121\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Inorganic Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1466604901001283\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Inorganic Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1466604901001283","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Doping mechanisms and electrical properties of La-doped BaTiO3 ceramics
The electrical properties of Ba1−xLaxTi1−x/4O3 ceramics where x≤0.20 were investigated by impedance spectroscopy after heat treatment in O2, Ar and air at 1350°C. Samples heated in O2 were electrically insulating with very high maximum permittivities, ∼25,000 at x=0.06 and exhibited significant ‘relaxor-type’ behaviour at x=0.10. Samples heated in Ar were semiconducting for all x whereas air heated samples were electrically inhomogeneous. Semiconductivity in these materials is attributed to oxygen loss as opposed to La-donor doping.
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