The structure, phase transition and magnetism of Ni46Mn41In13-xSbx (x=0, 2, 4, 6, 8, 10, 12, 13) alloys have been systematically studied in this paper. The results demonstrate that the arc-melting samples display pure L21-type and atoms are arranged more orderly. Curie temperature and martensitic inverse transformation temperature reduce at x6 gradually with increasing x. The magnetization-temperature curves indicate that substitution of In by Sb has a significant influence on the p-d hybridization interaction between p orbitals of main group element and d orbitals of transition metals, leading to a reverse trend of the magnetization of austenite and martensite with the increasing Sb content.
