High-field induced twist deformation in Fe-Ni invar

Magnetic structure of disordered Ni-Mn alloys as revealed by high field twist deformation

“…The twist was measured by the 3-terminal capacitance technique described previously [1). The magnetic field was varied in one direction, i.e.…”

“…After a careful search for systematic errors had been undertaken, the experimental findings lead us to believe this is an effect which is connected with the nature of the material. In a previous article [1] we have described the systematics and interpreted the results in terms of a canted spin structure. It is consistent with the formation of a net azimuthal component of magnetization of the order of 1% of the saturation magnetization.…”

“…The theory considers alloys in which the exchange integrals obey the conditions ( 1) with an arbitrary relation between their absolute values [3]. In our case, subscripts 1 and 2 denote Ni and Mn atoms respectively.…”