INFLUENCE OF SPIN-ORBIT-COUPLING ON THE TRANSPORT AND MAGNETIC-PROPERTIES OF CO3PD97

The influence of spin-orbit coupling on the transport and magnetic properties of Co3Pd97 is investigated. Analysis of detailed field- and temperature-dependent ac susceptibility data yields a ferromagnetic ordering temperature of TC137 K, although asymptotic critical exponents describing this transition cannot be evaluated due to the presence of this coupling. This estimate for TC is in excellent agreement with that deduced from the temperature derivative of the zero-field resistivity, from the temperature dependence of the coercive field, and from the temperature dependence of the low-field magnetoresistive anisotropy. The occurrence of this latter anisotropy relies on the presence of a spin-orbit interaction (with an associated orbital moment), and the behavior of this anistropy is compared with model calculations which incorporate this coupling. © 1995 The American Physical Society.