Peculiarities of magnetic, elastic and transport properties near the Curie temperature in Nd1-xSrxMnO3 manganites

被引：15

作者：

Abramovich, AI ^{[1
]}

Michurin, AV ^{[1
]}

Gorbenko, OY ^{[1
]}

Kaul, AR ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 39期

关键词：

D O I：

10.1088/0953-8984/12/39/103

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The close interplay between magnetic, transport and elastic properties in Nd1-xSrxMnO3 (x = 0.33, 0.45) compounds is found. Near the Curie point we have observed: (i) an abrupt minimum on the temperature dependence of negative volume magnetostriction omega (T) (ii) the large volume contraction (DeltaV/V approximate to 0.1% for x = 0.33 compound), (iii) a maximum on the temperature dependence of resistivity rho (T), (iv) a maximum on the temperature dependence of absolute value of negative magnetoresistance. We have obtained large negative volume magnetostriction omega approximate to -10(-4) in a relatively low magnetic field B = 0.9 T and colossal negative magnetoresistance in the same magnetic field in the wide temperature region. These properties are explained by the existence of the conducting magnetic two-phase state in our compounds.

引用

页码：L627 / L632

页数：6

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