Organic ferromagnetism of Tc=6.7 K driven by evaporation of crystal solvent

被引:41
作者
Fujita, W
Awaga, K [1 ]
机构
[1] Nagoya Univ, Grad Sch Sci, Dept Chem, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[2] Nagoya Univ, Res Ctr Mat Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan
关键词
D O I
10.1016/S0009-2614(02)00535-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The crystals of the organic cation radical salt, BBDTA (benzo[1,2-d:4,5-d']bis[1,3,2]dithiazole).GaCl4 . CH3CN, was found to consist of a ladder-type structure of BBDTA, coordinated by the crystal solvent, CH3CN, While this material exhibited diamagnetic properties. removal of the crystal solvent resulted in a drastic change from diamagnetic to paramagnetic, probably caused by a packing modification of the BBDTA molecules. The desolvated form made bulk, ferromagnetic ordering at 6.7 K. This finding has superseded the highest Curie temperature of organic ferromagnets based on ferromagnetic interactions, <2 K. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码:385 / 388
页数:4
相关论文
共 19 条
  • [1] ORGANIC MOLECULAR SOFT FERROMAGNETISM IN A FULLERENE-C60
    ALLEMAND, PM
    KHEMANI, KC
    KOCH, A
    WUDL, F
    HOLCZER, K
    DONOVAN, S
    GRUNER, G
    THOMPSON, JD
    [J]. SCIENCE, 1991, 253 (5017) : 301 - 303
  • [2] [Anonymous], 2000, MOL MAGNETISM
  • [3] FERROMAGNETIC INTERMOLECULAR INTERACTION OF THE ORGANIC RADICAL, 2-(4-NITROPHENYL)-4,4,5,5-TETRAMETHYL-4,5-DIHYDRO-1H-IMIDAZOLYL-1-OXY 3-OXIDE
    AWAGA, K
    MARUYAMA, Y
    [J]. CHEMICAL PHYSICS LETTERS, 1989, 158 (06) : 556 - 558
  • [4] TWO-DIMENSIONAL NETWORK OF THE FERROMAGNETIC ORGANIC RADICAL, 2-(4-NITROPHENYL)-4,4,5,5-TETRAMETHYL-4,5-DIHYDRO-1H-IMIDAZOL-1-OXYL 3-N-OXIDE
    AWAGA, K
    INABE, T
    NAGASHIMA, U
    MARUYAMA, Y
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (21) : 1617 - 1618
  • [5] MAGNETOSTRUCTURAL CORRELATION IN A SERIES OF IODIDE SALTS OF P-N-ALKYLPYRIDINIUM NITRONYL NITROXIDES - DEPENDENCE OF THE IODIDE-PYRIDINIUM RING INTERACTION ON THE LENGTH OF THE N-ALKYL CHAIN
    AWAGA, K
    YAMAGUCHI, A
    OKUNO, T
    INABE, T
    NAKAMURA, T
    MATSUMOTO, M
    MARUYAMA, Y
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1994, 4 (09) : 1377 - 1385
  • [6] CONDUCTING CHARGE-TRANSFER SALTS BASED ON NEUTRAL PI-RADICALS
    BRYAN, CD
    CORDES, AW
    FLEMING, RM
    GEORGE, NA
    GLARUM, SH
    HADDON, RC
    OAKLEY, RT
    PALSTRA, TTM
    PEREL, AS
    SCHNEEMEYER, LF
    WASZCZAK, JV
    [J]. NATURE, 1993, 365 (6449) : 821 - 823
  • [7] Intermolecular interactions in the molecular ferromagnetic NH4Ni(mnt)(2)center dot H2O
    Coomber, AT
    Beljonne, D
    Friend, RH
    Bredas, JL
    Charlton, A
    Robertson, N
    Underhill, AE
    Kurmoo, M
    Day, P
    [J]. NATURE, 1996, 380 (6570) : 144 - 146
  • [8] BENZOBISDITHIAZOLE (BBDT) - AN ELECTRON-SPIN-RESONANCE STUDY
    DORMANN, E
    NOWAK, MJ
    WILLIAMS, KA
    ANGUS, RO
    WUDL, F
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (09) : 2594 - 2599
  • [9] Complex phase transitions in stable thiazyl radicals: spin-gap, antiferromagnetic ordering and double melting
    Fujita, W
    Awaga, K
    Nakazawa, Y
    Saito, K
    Sorai, M
    [J]. CHEMICAL PHYSICS LETTERS, 2002, 352 (5-6) : 348 - 352
  • [10] Room-temperature magnetic bistability in organic radical crystals: Paramagnetic-diamagnetic phase transition in 1,3,5-trithia-2,4,6-triazapentalenyl
    Fujita, W
    Awaga, K
    Matsuzaki, H
    Okamoto, H
    [J]. PHYSICAL REVIEW B, 2002, 65 (06) : 1 - 9