A Study of the Nature of the NMR Signal in Lithium Ferrite upon Exposure to a Low-Frequency Magnetic Field

被引：3
作者：
Mamniashvili, G., I [1 ]
Gegechkori, T. O. [1 ]
Gavasheli, Ts A. [2 ]
机构：
[1] Javakhishvili Tbilisi State Univ, Andronikashvili Inst Phys, GE-0177 Tbilisi, Georgia
[2] Dzhavakhishvili Tbilisi State Univ, GE-0179 Tbilisi, Georgia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2021年 / 122卷 / 09期
基金：
美国国家科学基金会;
关键词：
nuclear spin echo; low-frequency field; lithium ferrite; domain wall dynamics; pinning; relaxation; SPIN-ECHO; DOMAIN-WALLS; RELAXATION;
D O I：
10.1134/S0031918X21090088
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of modulation of the decay envelope of the echo signal of Fe-57 nuclei in lithium ferrite is studied experimentally, which demonstrates its intrawall origin. In contrast to cobalt characterized by a large modulating anisotropic component of the hyperfine field, which acts on nuclei in domain walls upon displacement of the latter, the manifestation of strong modulation effect in low anisotropic lithium ferrite with a relatively high mobility of domain walls is possibly caused by additional dynamic modulating effects associated with a high mobility of domain walls in this material.
引用
收藏
页码：841 / 846
页数：6
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