Field cycling methods as a tool for dynamics investigations in solid state systems: Recent theoretical progress

被引：26

作者：

Kruk, D. ^{[1
]}

Fujara, F. ^{[3
]}

Gumann, P. ^{[3
]}

Medycki, W. ^{[2
]}

Privalov, A. F. ^{[3
]}

Tacke, Ch. ^{[3
]}

机构：

[1] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

[2] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland

[3] Tech Univ Darmstadt, Inst Festkorperphys, D-64289 Darmstadt, Germany

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 2009年 / 35卷 / 03期

关键词：

Polarization transfer; Field-dependent relaxation; Quadrupolar interactions; Relaxation theory; LuF3; Molecular motion; Solid state systems; NMR; NUCLEAR-SPIN RELAXATION; PARAMAGNETIC-COMPLEXES; CROSS-RELAXATION; POLARIZATION TRANSFER; QUADRUPOLE SPINS; ELECTRON; NMR; CRYSTALS; S-GREATER-THAN-OR-EQUAL-TO-1; SPECTROSCOPY;

D O I：

10.1016/j.ssnmr.2009.01.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper physical mechanisms and theoretical treatments of polarization transfer and field-dependent relaxation in solid state systems, containing mutually coupled spins of spin quantum numbers l = 1/2 (spins 1/2) and S >= 1 (quadrupolar spins), are presented. First, theoretical descriptions of these effects are given in detail for an illustrative, simple system. Next, it is shown how to generalize the theories to much more complex spin systems. The polarization transfer and relaxation effects are illustrated by several examples. Typical misunderstandings regarding their physical origins are clarified. This paper reviews recent theoretical descriptions of the polarization transfer and relaxation phenomena. Its goal is to popularize the proper theoretical treatments with the intention to establish them as standard tools for analyzing field cycling data. (c) 2009 Elsevier Inc. All rights reserved.

引用

页码：152 / 163

页数：12

共 36 条

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