2001 Volume 70 Issue 9 Pages 2711-2716
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≤q 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.
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Proceedings of the Physico-Mathematical Society of Japan. 3rd Series
Proceedings of the Tokyo Mathematico-Physical Society. 2nd Series
Tokyo Sugaku-Butsurigakukwai Kiji-Gaiyo
Tokyo Sugaku-Butsurigakkwai Hokoku
Tokyo Sugaku-Butsurigaku Kwai Kiji
