Magnetic properties of 1,5-dimethyl-6-oxoverdazyl radical crystals. Observation of a spin-Peierls transition in 3-(4-cyanophenyl)-1,5-dimethyl-6-oxoverdazyl radical, p-CyDOV

Kazuo Mukai, Naoki Wada, Javad B. Jamali, Norio Achiwa, Yasuo Narumi, Koichi Kindo, Tatsuo Kobayashi, Kiichi Amaya

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Magnetic susceptibilities of 5 kinds of 3-(4-R-phenyl)-1,5-dimethyl-6-oxoverdazyl radicals (PDOV (R = H), p-MDOV (R = CH3O), p-MeDOV (R = CH3), p-CyDOV (R = CN), and p-NDOV (R = NO2)) have been measured in the temperature range of 4.2-300 K. The susceptibilities of PDOV, p-MDOV, and p-MeDOV can be explained by an antiferromagnetic Heisenberg alternating chain model. The susceptibility of p-CyDOV shows a broad maximum at 54 K, and decreases abruptly at 15 K, suggesting a spin-Peierls transition. High-field magnetization data (H = 0-35 T) which provide a clear evidence for a spin-Peierls transition were reported.

Original languageEnglish
Pages (from-to)538-544
Number of pages7
JournalChemical Physics Letters
Volume257
Issue number5-6
DOIs
Publication statusPublished - 1996 Aug 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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