Z. Xu, Weng-Hsing Huang, D. Viehland, R. Neurgaonkar
{"title":"Transmission electron microscopy study of strontium barium niobate relaxors","authors":"Z. Xu, Weng-Hsing Huang, D. Viehland, R. Neurgaonkar","doi":"10.1109/ISAF.1994.522439","DOIUrl":null,"url":null,"abstract":"Transmission electron microscopy (TEM) investigations have been performed on Sr/sub x/Ba/sub 1-x/Nb/sub 2/O/sub 6/ (SBN x/1-x). Bright-field imaging of <100>-orientated SBN 60/40 and 75/25 crystals revealed nanopolar domains with a strong shape anisotropy. The morphology of the nanopolar domains was needle-like. Selected area electron diffraction (SAED) patterns revealed the existence of 1/x[110] incommensurate modulations. Dark-field imaging of the incommensurate reflections found the existence of nanometer-sized ferroelastic domains. Diffuse scattering was observed in the SAED patterns along the <100>. This diffuse scattering is believed to arise due to strain gradient interactions between the A-site cation distribution and the incommensuration.","PeriodicalId":20488,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics","volume":"67 1","pages":"595-596"},"PeriodicalIF":0.0000,"publicationDate":"1994-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.1994.522439","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
Transmission electron microscopy (TEM) investigations have been performed on Sr/sub x/Ba/sub 1-x/Nb/sub 2/O/sub 6/ (SBN x/1-x). Bright-field imaging of <100>-orientated SBN 60/40 and 75/25 crystals revealed nanopolar domains with a strong shape anisotropy. The morphology of the nanopolar domains was needle-like. Selected area electron diffraction (SAED) patterns revealed the existence of 1/x[110] incommensurate modulations. Dark-field imaging of the incommensurate reflections found the existence of nanometer-sized ferroelastic domains. Diffuse scattering was observed in the SAED patterns along the <100>. This diffuse scattering is believed to arise due to strain gradient interactions between the A-site cation distribution and the incommensuration.
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