因为水晶格子经常是各向异性的,晶体的一些物理性质在方向 n 不同。一片多晶体是众多的微小的雏晶的一个总数。除非多晶体是雏晶的一个各向同性的总数,多晶体的物理性质与 n 变化。为晶体和多晶体的方向依赖者功能(DDF ) 被介绍在方向 n 描述物理性质的变化。直到现在,有很少报纸,系统地处理在 DDF 和水晶的取向分发之间的关系。此处,我们为晶体和多晶体给 DDF 的一般表情。我们在描述晶体和多晶体的物理性质讨论 DDF 的应用。
Some physical properties of crystals differ in direction n because crystal lattices are often anisotropic. A polycrystal is an aggregate of numerous tiny crystallites. Unless the polycrystal is an isotropic aggregate of crystallites, the physical properties of the polycrystal vary with n. The direction-dependent functions (DDF) for crystals and polycrystals are introduced to describe the variations of the physical properties in direction n. Until now there are few papers dealing systematically with relations between the DDF and the crystalline orientation distribution. Herein we give general expressions of the DDF for crystals and polycrystals. We discuss the applications of the DDF in describing the physical properties of crystals and polycrystals.