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- W1667039452 abstract "In this paper ternary compounds ${mathrm{GdFe}}_{12ensuremath{-}x}{mathrm{Re}}_{x}$ with x ranging from 1.0 to 2.4 have been synthesized and investigated by means of x-ray powder diffraction (XRD) and magnetic measurements. The compounds crystallize in the tetragonal ${mathrm{ThMn}}_{12}$ structure with space group $I4/mmm.$ Rietveld refinement of the XRD data revealed the preferential occupation of Re over the $8i$ site, which is essentially associated with the atomic size effect. The lattice parameter a and the cell volume V increase with Re content while c holds almost constant. The Curie temperature and saturation moment exhibit linear decreases with increasing Re content. Within the framework of the spin-fluctuation theory the reduction of the Curie temperature is determined mainly by the reduction of the average Fe moment caused primarily by the substitutional disorder of Re for Fe located at the $8i$ site. It was found that the magnetocrystalline anisotropy of ${mathrm{GdFe}}_{12ensuremath{-}x}{mathrm{Re}}_{x}$ changes from uniaxial to probably canted to planar with increasing x, which could be attributed to the competition between ferromagnetic and antiferromagnetic exchange interactions caused by the variation of the nearest-neighbor distance between Fe atoms and the disorder occupation of Re over the $8i$ site." @default.
- W1667039452 created "2016-06-24" @default.
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- W1667039452 date "2002-03-20" @default.
- W1667039452 modified "2023-09-23" @default.
- W1667039452 title "Effects of Re on crystallographic and magnetic properties ofGd(Fe,Re)12" @default.
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- W1667039452 doi "https://doi.org/10.1103/physrevb.65.134424" @default.
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