The Griffiths Phase and its Study by the EPR Method

被引：0
作者：
Eremina, R. M. [1 ]
机构：
[1] RAS, Zavoisky Phys Tech Inst, Fed Res Ctr, Kazan Sci Ctr, Sibirsky Tract 10-7, Kazan 420029, Russia
来源：
APPLIED MAGNETIC RESONANCE | 2025年 / 56卷 / 05期
关键词：
EXISTENCE; EVOLUTION;
D O I：
10.1007/s00723-025-01755-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The Griffiths phase forms in various magnetics in the presence of disorder and spin fluctuations in the system. In this paper, we present experimental facts in which the Griffiths phase is observed from the temperature dependence of magnetization, EPR, and SANS spectra; we present an equation describing the anisotropy fields, which are actually found from the EPR angular dependence of the resonance magnetic field and a formula for determining the critical exponent for magnetizations description. The features of the observation of the Griffiths phase in lanthanum manganites are presented.
引用
收藏
页码：559 / 579
页数：21
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