Phase separation in La-Pr manganites and its evolution in a magnetic field

被引：27

作者：

Voloshin, IF ^{[1
]}

Kalinov, AV

Savel'ev, SE

Fisher, LM

Babushkina, NA

Belova, LM

Khomskii, DI

Kugel', KI

机构：

[1] All Russia Electrotech Inst, State Res Ctr, Moscow 111250, Russia

[2] Kurchatov Inst, Russian Res Ctr, Moscow 123182, Russia

[3] Univ Groningen, NL-9747 AG Groningen, Netherlands

[4] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia

[5] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Moscow 127412, Russia

来源：

JETP LETTERS | 2000年 / 71卷 / 03期

关键词：

D O I：

10.1134/1.568291

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of the magnetic field H on the electrical resistivity rho and magnetic moment M of (La0.25Pr0.75)(0.7)Ca0.3MnO3 ceramic samples with various concentrations of O-16 and O-18 isotopes is studied. The behavior of rho(H) and M(H) is characterized by an unusual shifted hysteresis loop and slow relaxation at some of its sections. The effects observed are interpreted within the framework of a model that takes into account the coexistence of regions of a ferromagnetic metal and an antiferromagnetic insulator and their evolution in an external magnetic field. (C) 2000 MAIK "Nauka/Interperiodica".

引用

页码：106 / 110

页数：5

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