| Ce:YAP晶体中的孪晶缺陷 |
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| 引用本文： | 李红军,苏良碧,徐军,袁清习,朱佩平. Ce:YAP晶体中的孪晶缺陷[J]. 无机材料学报, 2007, 22(4): 663-666. DOI: 10.3724/SP.J.1077.2007.00663 |
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| 作者姓名： | 李红军 苏良碧 徐军 袁清习 朱佩平 |
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| 作者单位： | 1. 中国科学院上海光学精密机械研究所, 上海 201800;
2. 中国科学院高能物理研究所, 北京 100039 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金 |
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| 摘 要： | 采用同步幅射白光形貌及光学显微形貌等手段研究了Ce:YAP晶体中存在的孪晶缺陷. 对孪晶的性质进行了表征, 结果表明, 它们为{101}和{121}孪晶. 经分析, 我们认为相邻且相近的晶格参数互换是孪晶形成的内在因素, 并据此建立了孪晶结构模型; 另外, 晶体生长过程中放肩阶段生长速率的突变则是导致孪晶形成的主要的外部因素.
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| 关 键 词： | Ce:YAP晶体 孪晶缺陷 同步辐射白光形貌 晶体生长 |
| 文章编号： | 1000-324X（2007）04-0663-04 |
| 收稿时间： | 2006-07-18 |
| 修稿时间： | 2006-07-18 |
Twin Defects in Ce:YAP Crystal |
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| LI Hong-Jun,SU Liang-Bi,XU Jun,YUAN Qing-Xi,ZHU Pei-Ping. Twin Defects in Ce:YAP Crystal[J]. Journal of Inorganic Materials, 2007, 22(4): 663-666. DOI: 10.3724/SP.J.1077.2007.00663 |
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| Authors: | LI Hong-Jun SU Liang-Bi XU Jun YUAN Qing-Xi ZHU Pei-Ping |
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| Affiliation: | 1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The twin defects in Ce:YAP were investigated by using synchrotron radiation topography and etch figures. The results show that the twins are {101} and {121} types, and the exchange of neighboring lattice parameters is considered to be the intrinsic factor for twining. Based on such analysis, the twin structure model was established. Otherwise, the growth experiment results show that the abrupt change of growth rate during shoulder formation tends to cause twining. |
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| Keywords: | Ce:YAP crystal twin defect white-beam synchrotron radiation topography crystal growth |
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