Incommensurate magnetic structure of CrAs at low temperatures and high pressures

0580274 - FZÚ 2024 RIV US eng J - Journal Article
Eich, A. - Grzechnik, A. - Su, Y. - Ouladdiaf, B. - Sheptyakov, D. - Wolf, T. - Petříček, Václav - Shaheda, H. - Friese, K.
Incommensurate magnetic structure of CrAs at low temperatures and high pressures.
Acta Crystallographica Section B-Structural Science Crystal Engineering and Materials. Roč. 79, Dec (2023), s. 473-481. E-ISSN 2052-5206
Institutional support: RVO:68378271
Keywords : incommensurate magnetic structure * neutron diffraction * extreme conditions * high pressure
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.9, year: 2022
Method of publishing: Open access

The magnetic structure of chromium arsenide CrAs is studied with neutron powder diffraction at ambient pressure in the temperature range 1.5–300 K as well as with neutron single-crystal diffraction at 2 K and 0.12 GPa. The material undergoes an anti-isostructural phase transition at TN = 267 K and atmospheric conditions, in which both orthorhombic phases have the same space-group symmetry (Pnma, Z = 4) but different distortions of the parent hexagonal structure of the NiAs type (P63/mmc, Z= 2).
Permanent Link: https://hdl.handle.net/11104/0349023