Disordered local moment state of magnetic transition metals: a self-consistent KKR CPA calculation

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Abstract
The authors perform self-consistent KKR CPA calculations for the disordered local moment (DLM) state of Fe, Co, Ni and Cr at different temperatures. The DLM state is a model for the metals above their Curie temperatures, in the paramagnetic state. They find the dependence of the local magnetic moment on temperature and determine the Stoner temperature. For Fe, they obtain the magnitude of the local moment above the Curie temperature to be about 85% of the ground-state value, whereas for Co and Ni it is about 50% of the ground-state value. For Cr they find that no self-consistent local magnetic moment exists in this DLM state. With slightly increased lattice spacing the sizes of the local moments are found to increase for both Fe and Ni.