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日期:2025-06-02
This necessitates that some AB molecules must be added to the surface of the crystal if we keep the atom count in order, too (same concentration as the anion vacancy, to be precise). The realistic mixed case thus contains Schottky and Frenkel defects in p...
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日期:2025-05-28
Materials Science J.W. Morris, Jr. Page 77 The fact that real materials are not perfect crystals is critical to materials engi-neering. If materials were perfect crystals then their properties would be dictated by their composition and crystal structure a...
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日期:2025-05-30
4 13 Crystal structure • To discuss crystalline structures it is useful to consider atoms as being hard spheres with well-defined radii. • In this hard-sphere model, the shortest distance between two like atoms is one diameter. • We can also consider crys...
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日期:2025-05-30
跳到 Point defects - For historical reasons, many point defects, especially in ionic crystals, are ......
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日期:2025-05-28
In crystallography, a vacancy is a type of point defect in a crystal. Crystals inherently possess ......
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日期:2025-05-28
Point defect means missing of the atoms in the crystal, from the lattice site. In a crystal atoms all the ions, ......
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日期:2025-06-01
It is important to be clear about the possibilities of producing defects in ionic crystals. It is also important ......