Diluted ferromagnetic semiconductor（LaCa）（ZnMn）SbO isostructural to “1111” type iron pnictide superconductors

We report discovery of ferromagnetism in（LaCa）（ZnMn）SbO isostructural to the well-studied iron-based superconductor LaFeAs（O1 xFx）. Spin is induced by partial substitution of Mn2＋for Zn2＋, while charge is induced by substitution of Ca2＋for La3＋within the parent compound LaZnSbO. Ferromagnetism with Curie temperature（TC） is observed up to 40 K at the spin doping 0.15 by introducing Mn2＋into the Zn2＋sites for（La0.95Ca0.05）（Zn1 xMnx）SbO. The Hall coefficient measurement indicates p-type carrier for（La0.95Ca0.05）（Zn0.9Mn0.1）SbO with concentration of n~1020cm 3showing anomalous Hall effect below TC.