Magnetic Properties of New Cubic-Perovskite Mixtures; (La_<0.5>Na_<0.5>)RuO_3 and (Ca_<1-x>A_x)RuO_3 (A=Mg,Sr)

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概要

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• To clarify the nature of the ferromagnetic interactions in SrRu0, the Ru" Ru" exchange couplings in cubic-perovskite type ARu"0. (A=nonmagneticcation.) were investigated. Magnetic measurements were done on these sampleoxides (including single crystals of CaRu0.) by using a magnetic balance tech-nique. In contrast to the ferromagnetic behaviors in (Caj ,Sr,)Ru0. (,v40.4),both the (Lag.,Na..5)Ru0. metallic and (Caj ,Mg.)Ru03 (.X'=0.l, 0.3 and 0.5.)semiconductive systems were found to be Curie-Weiss paramagnets having nega-five asymptotic Curie points. On the (Cag..Srg..)Ru0. sample, an anomaloushump of z vs T curve was observed, which could be interpreted as being due toferromagnetic clusters of Sr". It was suggested that, besides the 180' super-exchange coupling, another indirect-exchange interaction via Sr" would beindispensable for the ferromagnetism in SrRu0,.

• 社団法人日本物理学会の論文
• 1978-01-15

著者

• Kanbayasi Akio

  Department Of Physics Faculty Of Science Hokkaido University

関連論文

• Magnetic Properties of SrRuO_3 Single Crystal
• Magnetic Properties of SrRuO_3 Single Crystal. : II
• Magnetocrystalline Anisotropy of SrRuO_3
• Magnetic Properties of New Cubic-Perovskite Mixtures; (La_Na_)RuO_3 and (Ca_A_x)RuO_3 (A=Mg,Sr)

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