QUASI ONE-DIMENSIONAL SPIN SYSTEM IN LANGMUIR-BLODGETT-FILMS OF A CHARGE-TRANSFER COMPLEX

被引：11

作者：

IKEGAMI, K ^{[1
]}

KURODA, S ^{[1
]}

SUGI, M ^{[1
]}

NAKAMURA, T ^{[1
]}

TACHIBANA, H ^{[1
]}

MATSUMOTO, M ^{[1
]}

KAWABATA, Y ^{[1
]}

机构：

[1] NATL CHEM LAB IND,TSUKUBA,IBARAKI 305,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1992年 / 61卷 / 10期

关键词：

ESR; ONE-DIMENSIONAL SPIN SYSTEM; EXCHANGE NARROWING; INTERCHAIN COUPLING; CHARGE-TRANSFER COMPLEX; LB FILMS; MOLECULAR ORIENTATION;

D O I：

10.1143/JPSJ.61.3752

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ESR spectra of conductive Langmuir-Blodgett (LB) films of N-docosylpyridinium-(TCNQ)2 are observed at the X and K bands. The spectrum simulation method is adopted to analyze these spectra, which show clear out-of-plane anisotropy, in order to obtain information concerning the magnetic and structural properties of the system. The analysis reveals that the linewidth anisotropy is dominated by the exchange-narrowed secular dipolar width peculiar to quasi one-dimensional spin systems. This result is consistent with the temperature dependent spin susceptibility data of the system, which has been found to be explained by the random-exchange Heisenberg antiferromagnetic chain model. These facts indicate the development of one-dimensional spin chains in the LB films. In addition, the orientation of TCNQ molecule is estimated from the spectrum analysis.

引用

页码：3752 / 3765

页数：14

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[1] CONDUCTING LANGMUIR-BLODGETT-FILMS [J].