用电子晶体学研究镧系biuwo 6相萤石型层中的有序空位

ChemRN: Materials Characterization (Topic) Pub Date : 2019-01-04 DOI:10.2139/ssrn.3310392

L. Patout, C. Alfonso, A. Charaï

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摘要

本文对单斜A2/m BiLuWO6晶相中存在的上层结构给出了新的认识。在几个晶体投影中的ED和HREM研究强调了萤石样块中阳离子无序的存在，其位置具有特定的占用值。单位胞参数b长度加倍的无序表现出较低的对称性，与P2空间群(SG)一致。

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Ordered Vacancies in the Fluorite-Type Layers of the Lanthanide BiLuWO 6 Phase by Electron Crystallography

The paper brings new information about the superstructure present in the monoclinic A2/m BiLuWO₆ crystal phase. ED and HREM investigations in several crystal projections have highlighted the presence of a cationic disorder in the fluorite-like blocks with sites having specific occupancy values. The disorder doubling the length of the unit-cell parameter b shows a lower symmetry in agreement with the P2 space group (SG).

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ChemRN: Materials Characterization (Topic)

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