Published March 2004 | Version v1
Journal article Metadata-only

Characteristics of phase-decomposed state in manganites and their relationship with transport and magnetic properties

Creators

  • 1. Inst. Teoreticheskoj i Prikladnoj Ehlektrodinamiki Rossijskoj Akademii Nauk, Moscow (Russian Federation)
  • 2. Inst. Fizicheskikh Problem im. P.L. Kapitsy Rossijskoj Akademii Nauk, Moscow (Russian Federation)

Description

The temperature and magnetofield resistance dependences, magnetoresistance and susceptibilities of the manganites are described within the frames of the model of the nonhomogeneous state, accounting for the availability of the ferromagnetic-correlation areas in the interval of the parameters, responsible for the dielectric behavior. Main attention is paid to the area of the comparatively high temperatures and small fields. Comparison of the theoretical results with the experimental data makes it possible to identify the basic characteristics of the nonhomogeneous state of the (La1-yPry)0.7Ca0.3MnO3; Pr0.71Ca0.29MnO3; (La0.4Pr0.6)1.2Sr1.8Mn2O7; La0.8Mg0.2MnO3

Abstract (Russian)

В рамках модели неоднородного состояния, учитывающей наличие ферромагнтно-коррелированных областей, описывается температурная и магнитополевая зависимости сопротивления, магнитосопротивления и восприимчивости манганитов в интервале парметров, отвечающих диэлектрическому поведению. Основной упор делается на область сравнительно высоких температур и малых полей. Сравнение теоретических результатов с экспериментальными данными позволяет выявить основные характеристики неоднородного состояния манганитов (La1-yPry)0.7Ca0.3MnO3; Pr0.71Ca0.29MnO3; (La0.4Pr0.6)1.2Sr1.8Mn2O7; La0.8Mg0.2MnO3

Additional details

Additional titles

Original title (Russian)
Характеристики фазово-расслоенного состояния манганитов и их связ' с транспортными и магнитными свойствами

Publishing Information

Journal Title
Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki
Journal Volume
125
Journal Issue
3
Journal Page Range
p. 648-658
ISSN
0044-4510
CODEN
ZETFA7

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36100414
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANALYTICAL SOLUTION; CALCIUM OXIDES; LANTHANUM OXIDES; MAGNESIUM OXIDES; MAGNETIC SUSCEPTIBILITY; MAGNETORESISTANCE; MANGANESE OXIDES; PHASE STUDIES; PRASEODYMIUM OXIDES; SOLID SOLUTIONS; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TUNNEL EFFECT
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; DISPERSIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HOMOGENEOUS MIXTURES; LANTHANUM COMPOUNDS; MAGNESIUM COMPOUNDS; MAGNETIC PROPERTIES; MANGANESE COMPOUNDS; MATHEMATICAL SOLUTIONS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; SOLUTIONS; STRONTIUM COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
21 refs., 12 figs., 3 tabs.