界面结构保持不变,而界面(002)D//(002)L·1/2[100]迁移后形成界面(002)D//(002)L,两者交替出现;相变过程中,界面迁移总是沿着最优化的路径进行原子跃迁和替换,遵循跃迁原子数目最少、跃迁路径最短原则.
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