Magnetism of an organic radical crystal with weak ferromagnetic moment below 5.4 K

Kazuyoshi Takeda, Masaki Mito, Hiroyuki Nakano, Tatsuya Kawae, Masako Hitaka, Seishi Takagi, Hiroyuki Deguchi, Syuji Kawasaki, Kazuo Mukai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

From the measurements of magnetic susceptibility, heat capacity, magnetization and EPR, the magnetism of the organic radical crystal of 1,3,5-triphenyl-6-oxoverdazyl is revealed to be descrived by a two-dimensional quantum Heisenberg antiferromagnet with the effective intra-plane exchange interaction J/kB=-4.3 K. The appearance of weak ferromagnetic moment is observed below 5.4 K. The magnetic susceptibility, however, shows its broad maximum around 2 K and decrease toward the low temperatures. These results are shown to be described by a four-sublattice model with two Dzyaloshinsky-Moriya vectors of opposite sign on the ac-plane. A proposal is made for crystal symmetry in which weak ferromagnetic moment is stabilized without direct ferromagnetic interactions.

Original languageEnglish
Pages (from-to)431-438
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume306
DOIs
Publication statusPublished - Jan 1 1997

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Magnetism
Magnetic susceptibility
moments
magnetic permeability
Crystals
Exchange interactions
Crystal symmetry
sublattices
Specific heat
crystals
Paramagnetic resonance
proposals
Magnetization
specific heat
interactions
magnetization
symmetry
Temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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Magnetism of an organic radical crystal with weak ferromagnetic moment below 5.4 K. / Takeda, Kazuyoshi; Mito, Masaki; Nakano, Hiroyuki; Kawae, Tatsuya; Hitaka, Masako; Takagi, Seishi; Deguchi, Hiroyuki; Kawasaki, Syuji; Mukai, Kazuo.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 306, 01.01.1997, p. 431-438.

Research output: Contribution to journalArticle

Takeda, Kazuyoshi ; Mito, Masaki ; Nakano, Hiroyuki ; Kawae, Tatsuya ; Hitaka, Masako ; Takagi, Seishi ; Deguchi, Hiroyuki ; Kawasaki, Syuji ; Mukai, Kazuo. / Magnetism of an organic radical crystal with weak ferromagnetic moment below 5.4 K. In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals. 1997 ; Vol. 306. pp. 431-438.
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AU - Hitaka, Masako

AU - Takagi, Seishi

AU - Deguchi, Hiroyuki

AU - Kawasaki, Syuji

AU - Mukai, Kazuo

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