Ia型天然金刚石结构缺陷的同步辐射形貌研究

功能材料, 2001, 32(6): 664-666.

1.燕山大学材料与化工学院,

2.中国科学院高能物理研究所,

3.中国科学院高能物理研究所,

基金项目: BSRF资助项目国家重点实验室基金

Study of structural imperfections in natural type- Ⅰdiamonds by synchrotron radiation topography

红外吸收光谱表明样品含片状和分散状分布的杂质氮,属Ia型金刚石.利用同步辐射对晶体进行了形貌学研究,在近完整晶体内近中心的(001)和(010)结晶学平面内观察到生长带,生长方向平行于(100)和(010).在欠完整晶体内小角度晶界发育,取向角达2.5°以上.晶体完整性与氮含量无明显相关关系.

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