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首页> 外文期刊>Physical review, B. Condensed matter and materials physics >Extensive studies of antiferromagnetic PuPd2Sn
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Extensive studies of antiferromagnetic PuPd2Sn

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A compound PuPd2Sn was studied by means of x-ray diffraction, magnetization, heat capacity, electrical resistivity, magnetoresistivity, Hall effect, and thermoelectric power measurements, performed in the temperature range 2-300 K and in magnetic fields up to 14 T. This compound orders antiferromagnetically at 11 K and shows localized magnetism of Pu3+ ion with mu(eff) being close to the intermediate coupling value. The total splitting of the plutonium H-6(5/2) multiplet is of the order of 150 K with a doublet being the ground state. Below T-N the specific heat and the electrical resistivity are dominated by electron-magnon scattering with an antiferromagnetic spin-waves spectrum typical of anisotropic antiferromagnetic systems. Strong enhancement of the low-temperature specific heat points to the presence of conduction electrons with high effective masses. The Hall coefficient of PuPd2Sn is positive and dominated by magnetic skew scattering. The thermoelectric power attains small positive values at high temperatures and exhibits a broad negative peak around 55 K. This behavior is discussed in terms of models appropriate for metallic systems with strong electronic correlations.

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