Magnetic Conversion Induced by Non-Magnetic Impurities in a Molecular Spin Ladder System, p-EPYNN·[Ni(dmit)2]
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概要
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We studied the impurity effects on the molecular spin ladder, (p-N-ethylpyridinium nitronylnitroxide cation (=p-EPYNN; S=1/2))·(bis(4,5-dithiolato-1,3-dithiole-2-thione) nickelate anion (=[Ni(dmit)2]; S=1/2)), that involved a two-leg spin ladder of [Ni(dmit)2] sandwiched by ferromagnetic chains of p-EPYNN, by making a solid solution system p-EPYNN · [Ni(dmit)2]1-x[Au(dmit)2]x with x≦0.5. Doping of the non-magnetic [Au(dmit)2] increases Curie defects in the ladder and results in antiferromagnetic behavior of p-EPYNN. This can be explained by the antiferromagnetic domains on the p-EPYNN chain induced by the spin polarization around the impurity site on the [Ni(dmit)2] spin ladder.
- Physical Society of Japanの論文
- 2001-09-15
著者
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Wada Nobuo
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Awaga Kunio
Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
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Otsuka Takeo
Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
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Inabe Tamotsu
Division Of Chemistry Graduate School Of Science Hokkaido University
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YOSHIMARU Masahiro
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
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Imai Hiroyuki
Division Of Chemistry Graduate School Of Science Hokkaido University
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Ogata Masao
Department Of Basic Science Graduate School Of Arts And Science University Of Tokyo
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Awaga Kunio
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo,
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Imai Hiroyuki
Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810
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Yoshimaru Masahiro
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo,
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Wada Nobuo
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo,
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Otsuka Takeo
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo,
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