ANOMALOUS STAGGERED TRANSVERSE MOMENT IN HALDANE-GAP ANTIFERROMAGNET NENP UNDER MAGNETIC-FIELDS

被引：5

作者：

CHIBA, M

AJIRO, Y

KIKUCHI, H

KUBO, T

MORIMOTO, T

机构：

[1] KYOTO UNIV,DEPT CHEM,KYOTO 606,JAPAN

[2] GOVT IND RES INST,NAGOYA,AICHI 462,JAPAN

[3] NARA UNIV EDUCAT,NARA 630,JAPAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷

关键词：

D O I：

10.1016/0304-8853(92)90369-Y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The proton NMR of a quasi-one-dimensional S = 1 antiferromagnet NENP (Ni(C2H8N2)2NO2(ClO4)) has been performed in the applied magnetic field B up to 12 T. At 4.2 K, with the configuration B // chain-axis, a large transverse moment perpendicular to the magnetic field has been observed, even below the critical field. It is not due to the 3D-order but it is concluded by a field-induced staggered moment due to a combined action between the staggered tilt of the principal axes of g-tensor of Ni2+ ions from the crystal b-axis (chain-axis) and the large transverse staggered susceptibility. A simple formula is also proposed to analyze the proton spin-lattice relaxation.

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页码：807 / 808

页数：2

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