Magneto-mechanical cycling and modeling the external stress effect on the magnetic-field-controlled strain response in Ni-Mn-Ga

Present publication gives a detailed theoretical concept and also presents the relevant experimental results concerning the effect of the constant external stress on the magnetic-field-controlled strain response during the cycling in magnetic field in Ni-Mn-Ga. We also discuss the physical mechanism of this effect using our latest model developments. Simultaneously we give the most important information about the main structural, magnetic and mechanical properties related to a family of nonstoichiometric Ni-Mn-Ga alloys having three different type of martensite crystal structures.