  The effect of Ge substitution on the magnetic, magnetocaloric and transport
properties of Ni45Co5Mn38Sb12-xGex (x=0-3) has been investigated. The decrease
in the exchange interaction brought by Ge substitution can be seen from the
reduction in the magnetization of austenite phase and the increase in the
martensitic transition temperature. Large magnetocaloric effect and
magnetoresistance have been observed at room temperature, making it a potential
material system for various applications.
