研究者情報 | 神奈川大学

スズキ　ケンタロウ Suzuki Kentaro 鈴木　健太郎所属神奈川大学理学部理学科神奈川大学大学院理学研究科理学専攻（化学領域）職種教授
言語種別	英語
発行・発表の年月	1997/02
形態種別	学術雑誌
査読	査読あり
標題	Magnetism of a Two-dimensional Weak-ferromagnetic Organic Radical Crystal, 1,3,5-Triphenyl-6-oxoverdazyl
執筆形態	共著
掲載誌名	J. Phys. Soc. Jpn.
掲載区分	国外
巻・号・頁	66(7),pp.2147-2156
著者・共著者	M. Mito, H. Nakano, T. Kawae, M. Hitaka, S. Takaki, H. Deguchi, K. Suzuki, K. Mukai, K. Takeda
概要	A genuine organic radical crystal 1,3,5-triphenyl-6-oxoverdazyl (TOV) has been revealed to be an S =1/2 two-dimensional (2D) weak-ferromagnetic Heisenberg antiferromagnet with the exchange interaction 2 J / k B =-9.0 K by the experiments of magnetic susceptibility, heat capacity, magnetization and electron paramagnetic resonance. The anomalous temperature dependence of the weak ferromagnetism at low temperatures is qualitatively explained by a four-sublattice model with two kinds of Dzyaloshinsky-Moriya (D-M) vectors of opposite sign on the a c -plane. The staggered susceptibility, which is a fictitious but intrinsic quantity for antiferromagnets, is estimated in TOV by making use of the canted weak ferromagnetic moments which dominate below 6 K. Especially the rapid growth of the magnetic susceptibility below 6 K is explained by the staggered susceptibility which makes the crossover effect from 2D Heisenberg to 2D Ising system, triggered by above the D-M anisotropy.
DOI	10.1143/JPSJ.66.2147
ISSN	1347-4073
PermalinkURL	http://journals.jps.jp/doi/10.1143/JPSJ.66.2147