کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829697 | 1524496 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray topography of a natural twinned diamond of unusual pseudo-tetrahedral morphology
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The internal morphology of a natural twinned diamond was investigated using X-ray section topography. The diamond consisted of two crystals joined along a {1Â 1Â 1} plane whose remote ends were triangular {1Â 1Â 1} faces with sizes approximately 4Â mm on the edge. A coating of fibrous growth obscured the morphology of the good quality diamond inside. Although the coat displayed re-entrant surfaces near the twin plane along three edges of the crystal, X-ray topography showed the inner crystal to protrude outwards along these same edges. The good quality inner core displayed the classical “spinel law” twinned octahedral morphology whereas the fibrous rim showed a typical sphalerite-like twinned tetrahedral morphology. A possible growth mechanism which could account for this is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 280, Issues 1â2, 15 June 2005, Pages 279-285
Journal: Journal of Crystal Growth - Volume 280, Issues 1â2, 15 June 2005, Pages 279-285
نویسندگان
Emmanuel Fritsch, Moreton Moore, Benjamin Rondeau, Richard G. Waggett,