Magnetic rotational hysteresis energy in low-cobalt Fe-Cr-Co alloys

Abstract The rotational hysteresis energy has been measured as a function of the applied field for the permanent-magnet material Fe64Cr27Co9 with a preferred orientation. The results are compared with the theoretical values obtained from the Shtrikman-Treves theory. The results are in good general agreement with this theory, and, from measurements of the rotational hysteresis integral and the angular dependence of the coercivity, it is concluded that changes in the magnetization occur principally by the curling mechanism.