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- Title
Comparison of the temperature‐ and pressure‐dependent behavior of the crystal structure of CrAs.
- Authors
Eich, Andreas; Grzechnik, Andrzej; Paulmann, Carsten; Müller, Thomas; Su, Yixi; Wolf, Thomas; Friese, Karen
- Abstract
The crystal structure of CrAs was investigated using synchrotron X‐ray single‐crystal diffraction for separate dependences on temperature (30–400 K) and on pressure (0–9.46 GPa). The isosymmetrical magnetostructural phase transition at TN = 267 K can induce a change in the microstructure by twinning due to a crossing of the orthohexagonal setting of the unit‐cell parameter ratio c/b. Within the crystal structure, one particular Cr–Cr distance exhibits anomalous behavior in that it is nearly unaffected by temperature and pressure in the paramagnetic phase, which is stable above 267 K and at high pressures. The distinction of this shortest Cr–Cr distance might be of importance for the superconducting properties of CrAs.
- Subjects
CRYSTAL structure; SYNCHROTRONS; PHASE transitions; X-ray diffraction
- Publication
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2021, Vol 77, Issue 4, p594
- ISSN
2052-5192
- Publication type
Article
- DOI
10.1107/S2052520621005655