Magnetic field induced evolution of highly resistant Griffiths phase in fine grain manganite La0.75Ca0.25MnO3

被引：14

作者：

Pekala, M. ^{[1
]}

Pekala, K. ^{[2
]}

Szydlowska, J. ^{[1
]}

Drozd, V ^{[3
]}

机构：

[1] Warsaw Univ, Chem Dept, Warsaw, Poland

[2] Warsaw Univ Technol, Phys Dept, Warsaw, Poland

[3] Florida Int Univ, Miami, FL 33199 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 475卷

关键词：

SUSCEPTIBILITY; RESONANCE;

D O I：

10.1016/j.jmmm.2018.11.069

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Griffiths phase in fine grain manganite La0.75Ca0.25MnO3 is studied by the complementary structural methods, DC magnetic susceptibility and ESR spectroscopy. The Griffiths like phase is detected above Curie temperature between 232 and 280 K and sustains up to high magnetic field of 3000 Oe. The magnetic susceptibility of Griffiths phase is a decreasing function of temperature. The magnetic field dependence of Griffiths phase susceptibility reveals its remarkable contribution to measured total susceptibility. The additional anomalous ESR signal supperimpossed on the paramagnetic one is ascribed to the locally inhomogeneous Griffiths like phase in agreement with the core - shell model.

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收藏

页码：189 / 194

页数：6

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