Hydrogenation effect on the hysteresis properties of rapidly quenched Nd-Ho-Fe-Co-B alloys

► Hysteresis properties of rapidly quenched (RQ) Nd-Fe-B alloy and its hydride. ► Magnetic anisotropy and a grain size are the key factors affecting the coercivity. ► Existing magnetic phase with high local coercivity in RQ alloys at T = 4.2 K.