| PTC型BaTiO3陶瓷的孪晶和孪晶界 |
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| 引用本文： | 宋祥云,邓小华.PTC型BaTiO3陶瓷的孪晶和孪晶界[J].硅酸盐学报,1991,19(5):385-388. |
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| 作者姓名： | 宋祥云 邓小华 |
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| 作者单位： | 中国科学院上海硅酸盐研究所
(宋详云，邓小华，祝炳和，马利泰)，中国科学院上海硅酸盐研究所(温树林) |
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| 摘 要： | 用透射电镜和高分辨电镜观察研究了PTC型BaTiO_3陶瓷的孪晶和孪晶界结构,并提出了可能的{111}孪晶及孪晶界的原子结构模型。结果表明,{111}孪晶形成氧八面体共面的共格倾斜孪晶界,在孪晶界处可能存在一定量的A空位且原子密度要低于孪晶体内。同时还发现两种其它特征的孪晶现象。
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| 关 键 词： | BaTiO3陶瓷 孪晶 孪晶间界 PTC型 |
TWIN AND TWIN BOUNDARY IN PTC BaTiO_3 CERAMICS |
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| Song Xiangyun Deng Xiaohua Zhu Binghe Ma Litai Wen Shulin.TWIN AND TWIN BOUNDARY IN PTC BaTiO_3 CERAMICS[J].Journal of The Chinese Ceramic Society,1991,19(5):385-388. |
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| Authors: | Song Xiangyun Deng Xiaohua Zhu Binghe Ma Litai Wen Shulin |
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| Abstract: | The twin and twin boundary in PTC BaTiO_3 ceramics were studied by TEM and HREM. An atomic structure model of {111} plane twin boundary was constructed according to HREM study result, the results indicate that the {111} twin boundary is characterized by the octahedra with sharing face and is in the form of coherency tilt twin boundary which has a density less than that in twin crystal. Another two kinds of twin with specific features were also found. |
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| Keywords: | twin twin boundary octahedron lattice |
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