화학공학소재연구정보센터
Materials Science Forum, Vol.394-3, 553-556, 2001
Influence of structural transition on transport properties of Ni2MnGa alloy
The transport properties of a Ni2MnGa alloy in the martensitic and austenitic states were investigated. The dependence of temperature coefficient of resistivity on temperature shows kinks at the structural and ferro-para magnetic transitions. It is suggested that electron-magnon and electron-phonon scatterings are dominant scattering mechanisms for the Ni2MnGa alloy in the martensitic and austenitic states, respectively. It was observed that martensite reveals a higher Debye temperature comparing with the austenite, which was explained by a difference in restore coefficient between atoms.