Character of order-disorder and displacive components in barium titanate |
| |
Authors: | Stern Edward A |
| |
Institution: | Physics Department, Box 351560, University of Washington, Seattle, Washington 98195, USA. |
| |
Abstract: | Reconciling the apparently contradictory results of NMR and x-ray absorption fine structure measurements on the ferroelectric perovskite BaTiO3 gives insight into the character of the displacive and order-disorder components of the phase transitions of this material. The order-disorder component in the transition consists of local atomic displacements from cubic symmetry of constant magnitude that partially lose long-range order, while the displacive component consists of reorientation of these displacements. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|