Aliovalent ion-doped BaFe2As2: Single crystal growth and superconductivity

High quality single crystals of BaFe2As2 doped with aliovalent ions either out-of or in the basal plane of FeAs, namely hole-doped Ba1-xKxFe2As2 and BaFe2-xMnxAs2, or electron-doped BaFe2-xMxAs2(M = Co and Ni), were grown using self-flux method. By inducing a seed in melt during growth large crystal sized up to 040 x 5 mm was obtained. The phase diagrams showing spin density wave (SDW) and superconducting transitions were established based on the resistivity and magnetic susceptibility data. (C) 2009 Elsevier B.V. All rights reserved.