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@ARTICLE{Grzechnik:1007678,
author = {Grzechnik, Andrzej and Dmitriev, Vladimir and Hanfland,
Michael and Geise, Tobias and Shahed, Hend and Friese,
Karen},
title = {{A}nti-isostructural phase transition and twinning in
{C}r{A}s at low temperatures and high pressures},
journal = {Journal of physics and chemistry of solids},
volume = {180},
issn = {0022-3697},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2023-02161},
pages = {111436 -},
year = {2023},
abstract = {Chromium arsenide CrAs (Pnma, Z = 4) is studied with
synchrotron single-crystal diffraction in diamond anvil
cells at high-pressures and low temperatures to examine its
structural evolution across the boundary (TN) between the
antiferromagnetic (AF) and paramagnetic (PM) states.
Compressing CrAs across TN at low temperatures is equivalent
to warming up the material from the AF to PM phases at
atmospheric pressure. The phase transition at different
conditions is determined from the abrupt changes of the
lattice parameters, unit-cell volumes, axial ratios, and
interatomic distances. Although, the space group symmetry
does not change at TN, the transition is associated with the
formation of twin domains. All experimental observations are
rationalized with the concept of an anti-isostructural phase
transition, in which both orthorhombic phases have the same
space group symmetry, but different distortions of the
parent hexagonal structure of the NiAs type (P63/mmc, Z =
2). The magneto-structural phase transformation in CrAs is
the first example of the anti-isostructural phase
transition, in which twinning, as a signature of lost higher
rotational symmetry, has been detected.},
cin = {JCNS-FRM-II / MLZ / JCNS-2 / JCNS-4},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-4-20201012},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001001468500001},
doi = {10.1016/j.jpcs.2023.111436},
url = {https://juser.fz-juelich.de/record/1007678},
}