Neutron diffraction study of YFe10−xCoxMo2

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Abstract
YFe10−xCoxMo2(0 ≤ x ≤ 10) compounds were synthesized and studied by x-ray and neutron diffraction. Single phase samples with ThMn12-type structure can be formed in the entire range of composition. Magnetic properties were studied at fields up to 70 kOe in the temperature range of 1.5 K to room temperature. X-ray diffraction analyses of aligned powders indicate that the easy magnetization direction is parallel to the c axis when x≤6, and deviates from the c axis when x≥8. Neutron diffraction experiments show that the molybdenum atoms exhibit a strong preference for occupying the 8i sites, and cobalt atoms prefer to occupy the 8f and 8j sites.