Author/Authors :
Nicholson، نويسنده , , D.M. and Odbadrakh، نويسنده , , Kh. and Shassere، نويسنده , , B.A. and Rios، نويسنده , , O. and Hodges، نويسنده , , J. and Ludtka، نويسنده , , G.M. and Porter، نويسنده , , W.D. and Sefat، نويسنده , , A.S. and Rusanu، نويسنده , , A. and Brown، نويسنده , , G. and Evans III، نويسنده , , B.M.، نويسنده ,
Abstract :
Magnetic shape memory alloys have great promise as magneto-caloric effect refrigerant materials due to their combined magnetic and structural transitions. Computational and experimental research is reported on the Ni2MnGa material system. The magnetic states of this system are explored using the Wang-Landau statistical approach in conjunction with the Locally Self-consistent Multiple-Scattering method. The effects of alloying agents on the transition temperatures of the Ni2MnGa alloy are investigated using differential scanning calorimetry and superconducting quantum interference device. Experiments are performed at the Spallation Neutron Source at Oak Ridge National Laboratory to observe the structural and magnetic phase transformations.
Keywords :
Diffusion élastique des neutrons , first principles , Premiers principes , Ni2MnGa , Magnétocalorique , magnetic entropy , Entropie magnétique , magnetocaloric , Elastic neutron scattering , Ni2MnGa
