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首页> 外文期刊>Philosophical Magazine Letters >Open-ended stacking-fault tetrahedra in X-ray topographs of cubic silicon carbide
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Open-ended stacking-fault tetrahedra in X-ray topographs of cubic silicon carbide

机译:立方碳化硅的X射线形貌图中的开放式堆积缺陷四面体

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Trihedral configurations of stacking faults have been observed in X-ray topographs of a 3C-SiC platelet. The trihedra were formed of stacking faults lying on three {111} planes, and 1/6 (110) stair-rod dislocations formed their edges. The open side of the trihedra extended to the crystal's surface, giving these defects the same form as the open-ended stacking-fault tetrahedra that are sometimes observed in the transmission electron microscopy of misfit-strained epitaxial layers. However, these trihedra are much larger, 40-200 μm across, and are a growth defect, originating from a mechanism other than the condensation of vacancies or the release of misfit strain.
机译:在3C-SiC血小板的X射线形貌图中已观察到堆垛层错的三面体构造。三面体由位于三个{111}平面上的堆积断层形成,并且1/6(110)的阶梯杆位错形成了它们的边缘。三面体的开放侧延伸到晶体表面,使这些缺陷具有与开放式堆叠缺陷四面体相同的形式,这种缺陷有时在失配应变的外延层的透射电子显微镜中观察到。但是,这些三面体更大,跨度为40-200μm,并且是生长缺陷,其起因于空位凝结或错配应变释放以外的机制。

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