Magnetic characterization of one-dimensional systems composed of nitronylnitroxide radicals as studied by ESR and susceptibility measurements

M. Nishizawa, D. Shiomi, K. Sato, T. Takui, K. Itoh

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)

    Abstract

    We synthesized a novel organic radical, 3,4-dichlorophenyl nitronyl nitroxide and characterized magnetic properties in the solid state. An X-ray crystal structure analysis revealed that this molecule formed one-dimensional regular chains in the crystal. Temperature dependence of magnetic susceptibility was reproduced by the antiferromagnetic regular chain model with an exchange interaction J/kB = -8.0 K, which is consistent with the crystal structure. The radical crystal is an example of the regular spin chain in the organic systems that exhibits the largest exchange interaction. Single-crystal cw-ESR exhibited a temperature-dependent shift of g-value. The physical origin of the g-shift is discussed by comparing the observed data with theories describing the short range order effect in antiferromagnetic spin chains. The possibility of demagnetizing field effect on the g-shift in the paramagnetic crystal is also referred.

    Original languageEnglish
    Pages (from-to)2267-2268
    Number of pages2
    JournalSynthetic Metals
    Volume103
    Issue number1-3
    DOIs
    Publication statusPublished - 1999 Jun 24
    EventProceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier
    Duration: 1998 Jul 121998 Jul 18

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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