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- W1969074967 abstract "The paramagnetic scattering function S(q,ensuremath{omega}) of the metallic ferromagnet ${mathrm{Pd}}_{2}$MnSn has been investigated up to 4${T}_{C}$ over a wide q range along the [100], [011], and [111] directions by means of both polarized and unpolarized neutron scattering techniques. The temperature and q dependence of the static response, ${k}_{B}$Tensuremath{chi}(q), is explained rather well by the Heisenberg model with long-range interactions, although there are nontrivial deviations from the theory. The features of the dynamical response are summarized as follows: (i) The scattering function has a simple one-peak form centered at ensuremath{Elzxh}ensuremath{omega}=0 in the whole q range at 1.5${T}_{C}$ and 4${T}_{C}$. (ii) The linewidths of the function near zone boundaries agree well with the calculations based on the three-pole approximation of the Heisenberg model. (iii) The linewidths near q=0 show the anomalously large temperature dependence, and have no ${q}^{2}$ dependence at 4${T}_{C}$. These facts point to the importance of the nonadiabatic effects of the conduction electrons at high temperatures, even though the Heisenberg-type interactions between localized spins play the major role on the spin dynamics in this system." @default.
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- W1969074967 date "1986-08-01" @default.
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- W1969074967 title "High-temperature spin dynamics of a cubic ferromagnet<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Pd</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>MnSn" @default.
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- W1969074967 doi "https://doi.org/10.1103/physrevb.34.1762" @default.
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