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有没有哪位大神知道哑铃缺陷dumbbell是怎么定义的。用ms怎么把模型建出来。谢谢 发自小木虫Android客户端 |
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漫天飘雪
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漫天飘雪
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5楼2017-07-18 11:05:03
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https://www.wikiwand.com/en/Interstitial_defect Self-interstitial defects are interstitial defects which contain only atoms which are the same as those already present in the lattice. Structure of self-interstitial in some common metals. The left-hand side of each crystal type shows the perfect crystal and the right-hand side the one with a defect. Structure of self-interstitial in some common metals. The left-hand side of each crystal type shows the perfect crystal and the right-hand side the one with a defect. The structure of interstitial defects has been experimentally determined in some metals and semiconductors. Contrary to what one might intuitively expect, most self-interstitials in metals with a known structure have a 'split' structure, in which two atoms share the same lattice site.[1][2] Typically the center of mass of the two atoms is at the lattice site, and they are displaced symmetrically from it along one of the principal lattice directions. For instance, in several common face-centered cubic (fcc) metals such as copper, nickel and platinum, the ground state structure of the self-interstitial is the split [100] interstitial structure, where two atoms are displaced in a positive and negative [100] direction from the lattice site. In body-centered cubic (bcc) iron the ground state interstitial structure is similarly a [110] split interstitial. These split interstitials are often called dumbbell interstitials, because plotting the two atoms forming the interstitial with two large spheres and a thick line joining them makes the structure resemble a dumbbell weight-lifting device. ?D?? https://upload.wikimedia.org/wik ... 2.png?1500475188610 ?????f ???? interstitial defect ????N ??? ??w??? λ????? ???w ?????N??????? ???γ??? ?????? ??? |
6楼2017-07-19 22:42:35