- 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 CAmca. 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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