INELASTIC NEUTRON-SCATTERING STUDY OF STRUCTURAL PHASE-TRANSITIONS IN POLYPHENYLS

被引：48

作者：

CAILLEAU, H

GIRARD, A

MOUSSA, F

ZEYEN, CME

机构：

[1] CEA SACLAY,LAB LEON BRILLOUIN,F-91190 GIF SUR YVETTE,FRANCE

[2] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 29卷 / 03期

关键词：

D O I：

10.1016/0038-1098(79)91051-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Inelastic neutron scattering was used to study structural phase transitions in polyphenyls. These transitions result from the stabilization of the non-planar molecular configuration with respect to a torsional angle between the planes of phenyl rings. For biphenyl the zone boundary mode shows a pronounced softening in the temperature range 60-200 K and becomes overdamped close to the transition temperature. For p-terphenyl the spectrum contains a quasi-elastic anisotropic central component diverging on lowering the temperature. © 1979.

引用

页码：259 / 261

页数：3

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