Abstract
The crystallographic and magnetic properties of Y2(Fe1−xCox)14B, x=0.00, 0.1, 0.2, 0.3, 0.4, and 0.5, were investigated by neutron diffraction and magnetic measurements at selected temperatures from 4.2 K to above the Curie temperature. The preferential occupation by Co atoms among the six nonequivalent crystallographic sites of Fe has been determined together with the mean magnetic moments of the Fe and Co atoms. The Fe atoms are found to favor the j2 site. The atomic ordering and its relationship to the magnetic properties are explained on the basis of the local site symmetries and the effect of the differing electronic behavior of the Fe and Co atoms with respect to their nearest neighbors.
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