Voidites in pure type IaB diamonds
Voidites in pure type IaB diamonds
复制标题
纯 IaB 型钻石中的空洞岩
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
G. Woods
中科院分区：
文献类型：
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作者：
G. Tendeloo;W. Luyten;G. Woods
五种纯Ia型B金刚石的电子显微镜（未显示任何由{001}片晶引起的B′红外吸收峰的痕迹）显示了不同于以往任何报道的空洞分布。在三个晶体中，空洞是随机分布的，并且与降解的血小板无关，这些血小板本身并不存在于这些标本中。这些观察结果表明，空洞形成和血小板降解是不同的独立现象。另外两个speamens只显示出明显由塑性变形引起的位错阵列：没有看到空洞。显示出氮聚集的这种高级阶段的金刚石中的片晶的不形成是出乎意料的，并且将这些金刚石置于与所谓的“不规则”不同的类别中，其中片晶确实已经形成，但是随后在某种程度上经历了向完美位错环的转变过程。
Abstract Electron microscopy of five pure type IaB diamonds (showing no trace whatever of a B′ infrared absorption peak due to {001} platelets) reveals voidite distributions unlike any reported before. In three of the crystals the voidites are distributed at random, and are not associated with degraded platelets, which themselves are not present in these specimens. These observations show that voidite formation and platelet degradation are distinct independent phenomena. The other two speamens showed only arrays of dislocations that patently resulted from plastic deformation: no voidites were seen. The non-formation of platelets in diamonds showing such an advanced stage of nitrogen aggregation is unexpected, and places these diamonds in a category distinct from that called ‘irregular’, in which platelets have indeed formed, but then experienced, to some degree, a process of transformation to perfect dislocation loops.