Enhanced paramagnetism of the 4d itinerant electrons in the rhodium oxide perovskite SrRhO3

Article

关键词: SPIN FLUCTUATIONS;    MAGNETIC INSTABILITIES;    HEAT;    TEMPERATURE;    SUSCEPTIBILITY;    FIELD;   

DOI  :  10.1103/PhysRevB.64.224424

来源: SCIE

【 摘 要 】

Polycrystalline rhodium (IV) oxide perovskite SrRhO3 was obtained by high-pressure synthesis techniques, followed by measurements of the magnetic susceptibility, electrical resistivity, and specific heat. The title compound has five 4d electrons per perovskite unit and shows Fermi-liquid behavior in its electrical resistivity. The magnetic susceptibility is large [chi (300 K)-1.1 x 10(-3) K emu/mol Rh] and proportional to 1/T-2 (<380 K), while there is no magnetic long-range order above 1.8 K. The specific heat measurements indicate a probable magnetic contribution below 15 K, which is not predicted by the self-consistent renormalization theory of spin fluctuations for both antiferro- and ferromagnetic three-dimensional nearly ordered metals.

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