The structure and dielectric tunable properties of 〈0 0 1〉 preferred oriented BST ceramics prepared by templated grain growth method

In this work, textured barium strontium titanate ceramics with a high degree of 〈0 0 1〉 preferred orientation were prepared by templated grain growth technique. The structure and dielectric tunable properties of 〈0 0 1〉 textured BST ceramic were investigated. A high degree of fiber texture was achieved using 〈0 0 1〉 oriented SrTiO3 as template particles in fine-grained BST matrix. The dielectric tunability of 〈0 0 1〉 textured BST ceramic were significantly increased compared to random oriented ceramic. Furthermore the P–E curve of 〈0 0 1〉 textured BST ceramic presented a more visible hysteresis loop. Combined with origin of the tunability, these effects could be interpreted on the base of both hardening mechanism of soft mode and polar nano-region mechanism.