The Magnetic Properties of Manganese(II) Phthalocyanine

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概要

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• The magnetic transition from the ferro- to the para-magnetic state of manganese(II) phthalocyanine (C<SUB>32</SUB>H<SUB>16</SUB>N<SUB>8</SUB>Mn) has been observed by measurements of the magnetic susceptibility, the magnetization and the proton magnetic resonance in the low-temperature range. The positive Weiss constants were obtained from the static susceptibility measurements and the proton magnetic measurements. Moreover, the magnetic-field dependences of the experimental results were found in the low-temperature range. All of those findings confirm the ferromagnetic behavior of this substance in the lower-temperature region. From the measurements of the frequency shift in the resonant circuit of the proton magnetic resonance apparatus, the transition temperature was determined to be 8.6 K. A possible mechanism of long-range ordering was also discussed on the basis of the crystal structure of this substance.

• 公益社団法人 日本化学会の論文

著者

• Deguchi Yasuo

  College Of Liberal Arts And Science Kyoto University

• Ohya-Nishiguchi Hiroaki

  Department of Chemistry, Faculty of Science, Kyoto University

• Miyoshi Hirokazu

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

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