|Title||Fe-57 Mossbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Bud'ko, SL, Kong, T, Meier, WR, Ma, XM, Canfield, PC|
|Type of Article||Article|
|Keywords||electric-field gradients, hyperfine parameters, Materials Science, Metallurgical Engineering, Mossbauer spectroscopy, noncubic metals, physics, superconductors, temperature-dependence|
. The hyperfine parameters of CaKFe4As4 are compared with those for KFe2As2 measured in this work, and the literature data for CaFe2As2, and were found to be in between those for these two, ordered, 122 compounds, in agreement with the gross view of CaKFe4As4 as a structural analog of KFe2As2 and CaFe2As2 that has alternating Ca-and K-layers in the structure.
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