Electrical transport studies on the La0.7-xPrxBa0.3MnO3 (x=0, 0.1 and 0.2) manganite: Double metal-insulator transitions and low-temperature resistivity minimum

被引：14

作者：

Tozri, A. ^{[1
]}

Khelifi, J. ^{[1
]}

Baaziz, H. ^{[1
]}

Dhahri, E. ^{[1
]}

Hlil, E. K. ^{[2
]}

机构：

[1] Univ Sfax, Fac Sci Sfax, Appl Phys Lab, Sfax 3000, Tunisia

[2] Univ Grenoble 1, CNRS, Inst Neel, F-38042 Grenoble, France

来源：

MATERIALS LETTERS | 2014年 / 131卷

关键词：

Magnetic materials; Electrical properties; Double metal-insulator transition; Martensitic transition; Resistivity minimum; FILMS; MAGNETORESISTANCE; LA2/3BA1/3MNO3; PEROVSKITES;

D O I：

10.1016/j.matlet.2014.05.141

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical transport properties of the polycrystalline samples La0.7-xPrxBa0.3MnO3 (0 <= x <= 0.2) have been investigated. Two metal-insulator transitions (T-P1 and T-P2) are observed in the electrical resistivity. The abnormal transport properties are considered to be a sign of a martensitic transition in the T-P2 temperature region. Besides, all the samples clearly reveal the unusual low temperature resistivity minimum, presumably due to the combined effect of weak localization, electron-electron and electron-phonon scattering. The present results are discussed and possible explanations were given based on the related theory and previous reported results. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：61 / 63

页数：3

共 8 条

[1] Influence of Pr-doped manganite on critical behavior of La0.7-xPrxBa0.3MnO3 (x=0.00, 0.1, 0.2)
Khelifi, J.
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Dhahri, E.
Hlil, E. K.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 349 : 149 - 155
[2] Readdressing the issue of low-temperature resistivity minimum in La0.7Ca0.3MnO3 thin films
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[3] Electrical Transport and Magnetoresistance of La0.67Ca0.33MnO3: Agx (x=0, 0.1, 0.2, 0.3, 0.4) Composites
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[4] Structural, electrical and enhanced low field magneto-transport properties of La0.7Sr0.3MnO3 and (1-x) La0.7Ca0.2Sr0.1MnO3 (LCSMO) + (x) MgO composites
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[5] Double M-I transitions and low-temperature resistivity minimum of La2/3Ca1/3Mn1-xCoxO3(0≤x≤0.15) manganite
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[6] Enhanced room temperature magneto resistance in (1-x) % La0.7Sr0.3MnO3-x %WAX (x=0, 0.1, 0.2 and 1.0) nanocomposites
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[7] Effect of A-site ionic size variation on TCR and electrical transport properties of (Nd0.7-XLaX)0.7Sr0.3MnO3 with x = 0, 0.1 and 0.2
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[8] Influence of Al2O3 on low-temperature resistivity minima in (1-x)La0.7Ca0.3MnO3 + xAl2O3 composites
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