NMR-evidence for absence of floating in structurally incommensurate crystals

被引：7

作者：

Decker, F

Hacker, U

Holzer, KP

Mischo, P

Petersson, J

Michel, D

机构：

[1] Univ Saarland, Fachbereich Phys, D-66041 Saarbrucken, Germany

[2] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

来源：

FERROELECTRICS | 1998年 / 208卷 / 1-4期

关键词：

modulated structures; phase transitions; dynamics; NMR;

D O I：

10.1080/00150199808014875

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamics of the incommensurate (IC) modulation is investigated for several IC systems near the transition to the normal high temperature phase by means of quadrupolar perturbed NMR spectra using first-order effects. For the special case of the IC phase of Rb2ZnCl4 also two-dimensional Rb-87 NMR exchange spectra are reported. All results can be described consistently in terms of a static modulation in the IC phase without any indication for "floating" or large scale fluctuations of the modulation wave.

引用

页码：201 / 212

页数：12

共 28 条

[1] FLOATING OF THE MODULATION WAVE IN INCOMMENSURATE RB2ZNCL4 [J].