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- W1995405917 abstract "The modifications of the crystallographic and magnetic structures of PrNi${mathrm{O}}_{3}$ associated with the decrease of the metal-insulator transition temperature, ${T}_{mathrm{MI}}$, with external pressure (${P}_{mathrm{ext}}ensuremath{approx}5$ kbar) have been investigated by means of neutron powder diffraction. Our results indicate that the symmetry of the unit cell (orthorhombic $mathrm{Pbnm}$ at ambient pressure), is preserved in the pressure range studied. The changes observed in the Ni-O distance and the Ni-O-Ni superexchange angle are, however, similar in sign but very different in magnitude from those obtained by applying an equivalent internal pressure. The antiferromagnetic ordering observed at ambient pressure for $T<{T}_{mathrm{MI}}$ remains unchanged for ${P}_{mathrm{ext}}<5$ kbar. This finding is in strong contrast with the results of high-pressure electrical resistance measurements, where a reentrant metallic behavior was observed for $P>4$ kbar and $T<65$ K." @default.
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- W1995405917 date "1995-10-01" @default.
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- W1995405917 title "High-pressure neutron-diffraction study of the metallization process in PrNi<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>O</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W1995405917 doi "https://doi.org/10.1103/physrevb.52.9248" @default.
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