Magnetic susceptibility anomaly associated with premartensitic transition in Heusler alloy

Magnetic susceptibility anomaly during the premartensitic transformation in Heusler alloy Ni2MnGa is an important physical property and has been investigated in the present work by using Green's function technique based on the magnon–TA phonon interaction model. The results of the numerical calculation shows that this kind of anomalous effect is wavevector- and magnetic-field dependent.