INFLUENCE OF CHARGE AND MAGNETIC-ORDERING ON THE INSULATOR-METAL TRANSITION IN PR1-XCAXMNO3

被引：140

作者：

LEES, MR ^{[1
]}

BARRATT, J ^{[1
]}

BALAKRISHNAN, G ^{[1
]}

PAUL, DMK ^{[1
]}

YETHIRAJ, M ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.52.R14303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A detailed study of the properties of Pr1-xCaxMnO3 shows that for a range of compositions (0.3 less than or equal to x<0.5) there is a first-order magnetic-field-induced insulator-metal transition. For the x= 0.4 composition the magnetic and charge ordering (CO) effects are decoupled with antiferromagnetic (AFM) ordering, T-N=170 K, developing at considerably lower temperatures than the CO state, T-CO=250 K. Below the CO temperature, metamagnetic transitions exist that transform the magnetic correlations from either paramagnetic or AFM to ferromagnetic. Metastable conducting states are formed below 25 K.

引用

页码：14303 / 14307

页数：5

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