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- W2088647807 abstract "We report the magnetic structures of the $mathrm{Tb}{mathrm{Pt}}_{1ensuremath{-}x}{mathrm{Cu}}_{x}$ system obtained by means of neutron diffraction experiments. Symmetry analyses have been carried out for the ${mathrm{R}}^{3+}$ magnetic site. The compounds with copper concentrations $x<0.3$ present the same magnetic structure than the extreme TbPt, which is of noncollinear ferromagnetic type, $ensuremath{-}{mathrm{C}}_{x}{mathrm{F}}_{z}$; on the contrary, for copper concentrations $0.3<x<0.5$, we found incommensurate amplitude-modulated structures in which the moment modulus varies sinusoidally with a propagation vector along the $mathbf{b}$-axis. For concentrations $x>0.5$, the propagation vector lies in the $mathbf{a}mathbf{c}$-plane being the structure also amplitude-modulated. For the intermediate compound, $mathrm{Tb}{mathrm{Pt}}_{0.7}{mathrm{Cu}}_{0.3}$, we observe an evolution from an amplitude-modulated incommensurate structure to a noncollinear commensurate one, $ensuremath{-}{mathrm{C}}_{x}{mathrm{F}}_{z}$, that remains stable down to very low temperatures. The different kinds of magnetic ordering in the $mathrm{Tb}{mathrm{Pt}}_{1ensuremath{-}x}{mathrm{Cu}}_{x}$ series, along which the volume remains constant, are discussed in terms of the competition between RKKY interactions and magneto-crystalline anisotropy, and they are compared to those observed in $mathrm{Tb}{mathrm{Ni}}_{1ensuremath{-}x}{mathrm{Cu}}_{x}$." @default.
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- W2088647807 date "2004-11-19" @default.
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- W2088647807 title "From ferromagnetism to incommensurate magnetic structures: A neutron diffraction study of the chemical substitution effects inTbPt1−xCux" @default.
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- W2088647807 doi "https://doi.org/10.1103/physrevb.70.184425" @default.
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