Crystal structure and magnetic properties of the verdazyl biradical m-Ph-V2 forming a ferromagnetic alternating double chain

Kenji Iwase, Hironori Yamaguchi, Toshio Ono, Tokuro Shimokawa, Hiroki Nakano, Akira Matsuo, Koichi Kindo, Hiroyuki Nojiri, Yuko Hosokoshi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We have succeeded in synthesizing organic biradical crystals of m-Ph-V 2 [= 1,3-bis-(1,5-diphenylverdazyl-3- yl)benzene]. The intra and intermolecular interactions, which are deduced from the molecular packing in the crystal, are considered to form an alternating double chain. We evaluated the intramolecular ferromagnetic (FM) interaction from an analysis of the magnetic susceptibility of isolated m-Ph-V2 molecules. We analyzed the magnetic susceptibility and magnetization curves of the crystals by the quantum Monte Carlo method and successfully explained these properties using an S = 1=2 FM alternating double chain model, which consists of antiferromagnetically coupled FM alternating chains. In addition, the magnetic susceptibility and specific heat showed anomalous behavior at TN = 1.9 K, which indicates the magnetic phase transition to an antiferromagnetically ordered state.

Original languageEnglish
Article number074719
Journaljournal of the physical society of japan
Volume82
Issue number7
DOIs
Publication statusPublished - 2013 Jul 1

Keywords

  • Double chain
  • Magnetic properties
  • Organic radical
  • Verdazyl radical

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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