{"title":"Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/的A、b位阳离子取代效应","authors":"A. Herabut, A. Safari","doi":"10.1109/ISAF.1996.598139","DOIUrl":null,"url":null,"abstract":"Bismuth sodium titanate (Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/), BNT, with a small amount of additives including La, Sm, Nd, and Nb were prepared by a conventional mixed oxide method. Powders of all compositions were calcined at 800/spl deg/C for 2 hrs to form a pure perovskite phase. All specimens were sintered at 1150/spl deg/C for 2 hrs to achieve at least 95% theoretical densities. Samples of the BNT with La modification exhibited a dielectric permittivity of 515, electromechanical coupling factors k/sub t/ of 45% and k/sub p/, of 13%, and a piezoelectric charge coefficient d/sub 33/ of 100. The properties of the La-modified BNT suggest that these compositions are potential candidates for hydrophone applications.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"318 1","pages":"775-778 vol.2"},"PeriodicalIF":0.0000,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Effects of substitution in A- and B-site cations of Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/\",\"authors\":\"A. Herabut, A. Safari\",\"doi\":\"10.1109/ISAF.1996.598139\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Bismuth sodium titanate (Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/), BNT, with a small amount of additives including La, Sm, Nd, and Nb were prepared by a conventional mixed oxide method. Powders of all compositions were calcined at 800/spl deg/C for 2 hrs to form a pure perovskite phase. All specimens were sintered at 1150/spl deg/C for 2 hrs to achieve at least 95% theoretical densities. Samples of the BNT with La modification exhibited a dielectric permittivity of 515, electromechanical coupling factors k/sub t/ of 45% and k/sub p/, of 13%, and a piezoelectric charge coefficient d/sub 33/ of 100. The properties of the La-modified BNT suggest that these compositions are potential candidates for hydrophone applications.\",\"PeriodicalId\":14772,\"journal\":{\"name\":\"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics\",\"volume\":\"318 1\",\"pages\":\"775-778 vol.2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1996-08-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISAF.1996.598139\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.1996.598139","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effects of substitution in A- and B-site cations of Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/
Bismuth sodium titanate (Bi/sub 0.5/Na/sub 0.5/TiO/sub 3/), BNT, with a small amount of additives including La, Sm, Nd, and Nb were prepared by a conventional mixed oxide method. Powders of all compositions were calcined at 800/spl deg/C for 2 hrs to form a pure perovskite phase. All specimens were sintered at 1150/spl deg/C for 2 hrs to achieve at least 95% theoretical densities. Samples of the BNT with La modification exhibited a dielectric permittivity of 515, electromechanical coupling factors k/sub t/ of 45% and k/sub p/, of 13%, and a piezoelectric charge coefficient d/sub 33/ of 100. The properties of the La-modified BNT suggest that these compositions are potential candidates for hydrophone applications.
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