Analysis of the Magnetic Properties of Pr 2 Co 17 and Nd 2 Co 17

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Subject Area(s)

Chemical Engineering


By means of an improved Hamiltonian, in which the spin-spin dipole interaction is included, some magnetic quantities of the compounds Pr2Co17 and Nd2Co17, such as the magnetization, cone angle, etc., have been studied by the conventional parameter-fitting method. It is shown that the calculated results are in agreement with the experimental magnetic data. In particular, the accommodation of the measurements without the spin-spin dipole interaction leads to different values of the second-order crystal field parameter A2staggered 0at different temperatures, a physically undesirable circumstance, and to significant deviations of the calculated cone angles from experiments. These inadequate calculated results of A2staggered 0 and θc(T) are improved in this paper.