Structure of Pb(Fe_2/3W_1/3)O₃ single crystals with partial cation order.

ABSTRACT: Despite intensive studies on the complex perovskite Pb(Fe_2/3W_1/3)O₃ (PFWO) relaxor, understanding the exact nature of its multifunctional properties has remained a challenge for decades. In this work we report a comprehensive structural study of the PFWO single crystals using a combination of synchrotron X-ray diffraction and high-resolution electron microscopy. The set of {h + ½, k + ½, l + ½} superlattice reflections was observed for the first time based on single-crystal synchrotron X-ray experiments (100-450 K) and transmission electron microscopy investigations, which indicates some kind of B-cation ordering in PFWO which had been thought to be totally disordered. It was found that (1) the crystal structure of PFWO should be described by a partly order

SUBMITTER: Ivanov SA 

PROVIDER: S-EPMC7471969 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature