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- W2062828396 abstract "A procedure for the preparation of the starting oxides has allowed phase-pure synthesis of the rhombohedral, metallic perovskite system ${mathrm{La}}_{1ensuremath{-}x}{mathrm{Nd}}_{x}{mathrm{CuO}}_{3}$ $(0<~x<~0.6)$ under 25 kbar oxygen pressure at $900--1000ifmmode^circelsetextdegreefi{}mathrm{C}.$ It was not possible to exceed the $x=0.6$ limit with 65 kbar at $1600ifmmode^circelsetextdegreefi{}mathrm{C}.$ Measurement of the ${mathrm{CuO}}_{3}$-sublattice contribution to the paramagnetic susceptibility ${ensuremath{chi}}_{m}(T)$ was obtained for samples of different x by an appropriate subtraction of the ${mathrm{Nd}}^{3+}$-ion contribution as obtained from measurement of ${ensuremath{chi}}_{m}(T)$ for ${mathrm{NdAlO}}_{3}.$ The data are qualitatively compatible with the Mott prediction for a mass-enhanced ${ensuremath{chi}}_{m}(T)$ of a half-filled band that approaches the Mott-Hubbard transition from the itinerant-electron side. However, a model of strong-correlation fluctuations in a mass-enhanced Fermi liquid provides an alternative description of the data that is supported by transport measurements and a remarkable sensitivity of the susceptibility to small structural changes." @default.
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- W2062828396 date "2000-02-01" @default.
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- W2062828396 title "Approach to Curie-Weiss paramagnetism in the metallic perovskites<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Nd</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi …" @default.
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- W2062828396 doi "https://doi.org/10.1103/physrevb.61.3196" @default.
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