Magnetic Phase Transition between Ferromagnetic High-Temperature Phase and Antiferromagnetic Low-Temperature Phase in 5-Carboxy-2-thienyl Nitronyl Nitroxide

Magnetic Phase Transition between Ferromagnetic High-Temperature Phase and Antiferromagnetic Low-Temperature Phase in 5-Carboxy-2-thienyl Nitronyl Nitroxide

From the measurements of the temperature dependence of magnetization, a magnetic phase transition at 145 K with a thermal hysteresis is found for an organic radical 5-carboxy-2-thienyl nitronyl nitroxide. Ferromagnetic intermolecular interaction is observed in the high-temperature phase while antife...

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Veröffentlicht in:Chemistry letters 2001, Vol.30 (1), p.32-33
1. Verfasser: Sugano, Tadashi
Format: Artikel
Sprache:eng
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Zusammenfassung:From the measurements of the temperature dependence of magnetization, a magnetic phase transition at 145 K with a thermal hysteresis is found for an organic radical 5-carboxy-2-thienyl nitronyl nitroxide. Ferromagnetic intermolecular interaction is observed in the high-temperature phase while antiferromagnetic interaction is obtained for the low-temperature phase.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2001.32