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- W2912109496 abstract "${mathrm{U}}_{2}mathrm{N}{mathrm{i}}_{2}mathrm{Sn}$ is a member of a large family of intermetallic compounds with the tetragonal $mathrm{M}{mathrm{o}}_{2}mathrm{Fe}{mathrm{B}}_{2}$ crystal structure. It orders antiferromagnetically at 25 K with propagation vector $q=(0,0,frac{1}{2})$. Magnetization, magnetoacoustic, and neutron-diffraction experiments on a single crystal provide evidence that the uranium moments align parallel to the $c$ axis with the anisotropy energy of ensuremath{approx}170 K, indicating that ${mathrm{U}}_{2}mathrm{N}{mathrm{i}}_{2}mathrm{Sn}$ can be classified as an Ising system. The results are at variance with previous studies on polycrystals, which indicated different magnetic structure, and which were incompatible with the $5ftext{ensuremath{-}}5f$ two-ion anisotropy model dominant in most U band systems. High-field magnetization studies exhibit a weak linear response for fields along the basal plane up to the highest field applied (60 T), while the $c$-axis magnetization curve exhibits three metamagnetic transitions at approximately 30, 39, and 50 T. The U magnetic moments of $0.87phantom{rule{0.16em}{0ex}}{ensuremath{mu}}_{mathrm{B}}$, the low magnetic entropy, and the enhanced Sommerfeld coefficient $ensuremath{gamma}=187phantom{rule{0.16em}{0ex}}mathrm{mJ}/mathrm{mol}phantom{rule{0.16em}{0ex}}mathrm{f}.mathrm{u}.phantom{rule{0.16em}{0ex}}{mathrm{K}}^{2}$ suggest that ${mathrm{U}}_{2}mathrm{N}{mathrm{i}}_{2}mathrm{Sn}$ can be classified as an itinerant antiferromagnet with strong electron-electron correlations." @default.
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- W2912109496 date "2019-02-15" @default.
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- W2912109496 title "<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi mathvariant=normal>U</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi mathvariant=normal>N</mml:mi><mml:msub><mml:mi mathvariant=normal>i</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>Sn</mml:mi></mml:mrow></mml:math> and the origin of magnetic anisotropy in uranium compounds" @default.
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- W2912109496 doi "https://doi.org/10.1103/physrevb.99.064415" @default.
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