Nuclear spin-lattice relaxation of 60Co in the glassy alloy Co3.1Fe80.5B16.4 studied by low-temperature nuclear orientation

Abstract

The hyperfine field and nuclear spin-lattice relaxation of 60Co in the glassy alloy Co3.1Fe80.5B16.4 have been studied by low-temperature nuclear orientation technique. The thermal cycling method has been used for relaxation measurement. In comparison with the crystalline Fe matrix, the nuclear spin-lattice relaxation of 60Co in the glassy alloy has been found to be five times faster and shows no dependence on external magnetic field in the range 0.1-1.1 T. Weger's mechanism is proposed to play a crucial role in the nuclear spin-lattice relaxation in this material.