DISCOVERY OF A QUASI-1D ORGANIC FERROMAGNET, P-NPNN

被引:281
作者
TAKAHASHI, M
TUREK, P
NAKAZAWA, Y
TAMURA, M
NOZAWA, K
SHIOMI, D
ISHIKAWA, M
KINOSHITA, M
机构
[1] Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku
关键词
D O I
10.1103/PhysRevLett.67.746
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We discovered that an organic radical crystal, p-nitrophenyl nitronyl nitroxide (p-NPNN), is a quasi-1D ferromagnet induced by unpaired electrons on radicals. The magnetization and the susceptibility of the triclinic gamma-phase crystal are very well represented by the Bethe-ansatz solution of the S = 1/2 1D Heisenberg ferromagnet with nearest-neighbor coupling J congruent-to 4.3 K. Low-temperature specific heat and ac susceptibility measurements revealed that the crystal undergoes a ferromagnetic transition at 0.65 K, The interchain coupling J' was estimated to be about 0.1 K.
引用
收藏
页码:746 / 748
页数:3
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