Effect of Ba6Ti17O40/BaTiO3 Interface Structure on {111} Twin Formation and Abnormal Grain Growth in BaTiO3 |
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| Authors: | Yang-Il Jung Byoung-Ki Lee Suk-Joong L Kang |
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| Affiliation: | Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea;Memory Research and Development Division, Hynix Electronics Industry Company, Ltd., Ichon Kyoungki 467-860, Korea |
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| Abstract: | A structural transition of Ba6Ti17O40/BaTiO3 interfaces from faceted to rough was induced by reducing oxygen partial pressure in the atmosphere. As the oxygen partial pressure decreased, the number densities of {111} twins and abnormal grain decreased. TEM observation showed that the twin formation was governed only by the faceting of the interface. Experimental evidence of {111} twin-assisted abnormal growth of faceted BaTiO3 grains was also obtained. |
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| Keywords: | barium titanate interfaces grain growth |
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