Orientation control of compounds with layered structure-Development of principle and production of high performance thermoelectric materials-

为了开发一种高性能的热电材料，实验研究了在Bi和Ca基层状钴酸盐中形成（001）织构的方法。为此，研究了高温压缩变形。（001）上相邻的原子与层状钴酸盐中的原子相同，因此可以推测（001）可能是滑移面，从而通过单轴压缩变形形成（001）（压缩面）织构。在高温、低应变速率下进行压缩变形，形成织构。

In order to develop a high performance thermoelectric materials, the method to develop a (001) texture in Bi and Ca based layered cobaltites is experimentally examined. For this purpose, high temperature compression deformation was examined. The neighboring atoms on (001) are the same atoms in layered cobaltites, hence it is expected that (001) might be a slip plane, resulting in the formation of (001) (compression plane) texture by the uniaxial compression deformation. It is confirmed that the texture develops when the compression deformation is conducted at high temperatures with low strain rates.