Modification of the ground state in Sm-Sr manganites by oxygen isotope substitution

被引：40

作者：

Babushkina, NA

Chistotina, EA

Gorbenko, OY

Kaul, AR

Khomskii, DI

Kugel, KI

机构：

[1] Russian Res Ctr Kurchatov Inst, Inst Mol Phys, Moscow 123182, Russia

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[3] Univ Groningen, Ctr Mat Sci, Solid State Phys Lab, NL-9747 AG Groningen, Netherlands

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

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.67.100410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of O-16-->O-18 isotope substitution on electrical resistivity and magnetic susceptibility of Sm1-xSrxMnO3 manganites is analyzed. It is shown that the oxygen isotope substitution drastically affects the phase diagram at the crossover region between the ferromagnetic metal state and that of antiferromagnetic insulator (0.4<x<0.6), and induces the metal-insulator transition at for x = 0.475 and 0.5. The nature of antiferromagnetic insulator phase is discussed.

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页数：4

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