Nature Research, Nature Materials, 8(11), p. 682-685, 2012
DOI: 10.1038/nmat3333
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The K- and Co-doped BaFe2As2 (Ba-122) superconducting compounds are potentially useful for applications because they have upper critical fields (Hc2) of well over 50 T, Hc2 anisotropy Gamma