Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Magnetic Structure in the Antiferromagnetic State of the Organic Conductor, (DMe-DCNQI[3, 3:1]d_7)_2Cu: ^1H-NMR Analysis
Ko–ichi HirakiYoshiaki KobayashiToshikazu NakamuraToshihiro TakahashiShuji AonumaHiroshi SawaReizo KatoHayao Kobayashi
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1995 年 64 巻 6 号 p. 2203-2211

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The antiferromagnetic state of the title compound has been investigated by the measurements of 1H-NMR lineshape and nuclear spin-lattice relaxation rate, T1-1, on a single crystal sample. Below the Nèel temperature, TN -- 6.7, K, the resonance line was observed to split into three pairs of peaks. The angular dependence of the lineshape has revealed the magnetic structure of this compound; i) the antiferromagnetic moments are localized at Cu2+ sites and are regularly ordered with a three-fold periodicity along the stacking c-axis; ii) the easy axis is in the ab-plane and the c-axis is the hard axis; iii) a model of the three dimensional arrangement of the magnetic moments well explaining the experimental results is proposed.
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© The Physical Society of Japan 1995
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