摘要
A combined neutron diffuse scattering study and model analysis of the antiferroelectric crystal PbZrO3 is described. Following on from earlier X-ray diffuse scattering studies, supporting evidence for disordering of oxygen octahedral tilts and Pb displacements is shown in the higherature cubic phase. Excess diffuse scattering intensity is found at the M and R points in the Brillouin zone. A shell-model molecular dynamics simulation closely reproduces the neutron diffuse scattering pattern. Both in-phase and antiphase tilts are found in the structural model, with in-phase tilts predominating. The transition between disordered and ordered structure is discussed and compared with that seen in Zr-rich PbZr1-xTixO3.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 1637-1644 |
| 页数 | 8 |
| 期刊 | Journal of Applied Crystallography |
| 卷 | 48 |
| DOI | |
| 出版状态 | 已出版 - 2015 |
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