Symmetry analysis of the structural and magnetic phase transitions in 122 iron arsenides

Title: Symmetry analysis of the structural and magnetic phase transitions in 122 iron arsenides
Creator: Howard, Christopher J.; Carpenter, Michael A.
Relation: Acta Crystallographica Section B: Structural Science Vol. 68, Issue 2, p. 209-212
Publisher Link: http://dx.doi.org/10.1107/S0108768112008294
Publisher: Wiley-Blackwell
Resource Type: journal article
Date: 2012
Description: It is evident from the literature that the 122 iron arsenides, XFe₂As₂ with X = Ca, Sr, Ba or Eu, undergo one or more phase transitions from a higher-temperature paramagnetic tetragonal structure in grey group I4/mmm1' to an antiferromagnetic structure with magnetic space group C_Amca. Symmetry analysis is used to enumerate the possibilities for the transition (or transitions) between the higher- and lower-symmetry structures, and the results are used as a basis for comment on published experimental results.
Subject: iron arsenides; magnetic structure; phase transitions; group therapy
Identifier: http://hdl.handle.net/1959.13/1319027
Identifier: uon:23763
Identifier: ISSN:0108-7681
Language: eng
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