Al-27 NMR of the incommensurate phase in AlPO4

被引：4

作者：

Apih, T

Mikac, U

Kityk, AV

Blinc, R

机构：

[1] J. Stefan Institute

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.55.2693

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The temperature dependence of the quadrupole perturbed Al-27 NMR spectra has been measured in alpha, beta, and incommensurate phases of AlPO4. The observed Al-27 NMR line shapes show that the incommensurate phase is not a superposition of differently oriented single-k domains but rather corresponds to a planar triply-k modulated structure. The three modulation waves are correlated and the relative phase shifts are Psi(1)+Psi(2)+Psi(3)=0. The amplitude of the AlO4 twist angle in the I phase is estimated as 1.5 degrees-2 degrees.

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页码：2693 / 2696

页数：4

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