Observation of weak ferromagnetism in organic verdazyl radical crystal, p-CyDpTV

Kazuo Mukai, Masaaki Nuwa, Tomonari Morishita, Takaki Muramatsu, Tatsuo C. Kobayashi, Kiichi Amaya

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Magnetic property of 3-(4-cyanophenyl)-1,5-diphenyl-6-thioxoverdazyl (p-CyDpTV) radical crystal has been studied in the temperature range of 0.05-300 K in external magnetic fields 3, 11, 30, and 100 Oe by using SQUID magnetometer. Weak ferromagnetic behavior was observed at TN = 0.41 K. Below TN, the spontaneous magnetization Ms(T) increased rapidly, reaching a maximum of 31.1 emu/mol at 0.05 K. Spin-canting angle was estimated to be 0.32° at 0.05 K. Near TN, Ms(T) α [1-(T/TN)]β with the critical exponent of β = 0.36, in agreement with that expected for an isotropic three-dimensional (3D) Heisenberg spin system.

Original languageEnglish
Pages (from-to)501-505
Number of pages5
JournalChemical Physics Letters
Issue number5-6
Publication statusPublished - Jul 4 1997
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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