Room-Temperature Ba(Fe1-x Cox)2 As2 is not Tetragonal: Direct Observation of Magnetoelastic Interactions in Pnictide Superconductors.

Authors :: Cantoni C
McGuire MA
Saparov B
May AF
Keiber T
Bridges F
Sefat AS
Sales BC
Source :: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2015 May 06; Vol. 27 (17), pp. 2715-21. Date of Electronic Publication: 2015 Mar 23.
Publication Year :: 2015
Abstract: Lattice distortions corresponding to Ba displacements with respect to the FeAs sublattice are revealed to break the room-temperature tetragonal symmetry in Ba(Fe1-x Cox)2 As2. The displacements yield twin domains of the size of ≈10 nm. The domain size correlates with the magnitude of the local Fe magnetic moment and its non-monotonic dependence on Co concentration.<br /> (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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