LARGE MAGNETOVOLUME EFFECT IN YTTRIUM DOPED LA-CA-MN-O PEROVSKITE

被引：308

作者：

IBARRA, MR ^{[1
]}

ALGARABEL, PA ^{[1
]}

MARQUINA, C ^{[1
]}

BLASCO, J ^{[1
]}

GARCIA, J ^{[1
]}

机构：

[1] UNIV ZARAGOZA,CSIC,FAC CIENCIAS,INST CIENCIA MAT ARAGON,E-50009 ZARAGOZA,SPAIN

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3541

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

ac initial magnetic susceptibility, thermal expansion, and magnetostriction measurements were performed on a polycrystal of La0.60Y0.07Ca0.33MnO3 manganese oxide. We observed a spontaneous volume magnetic contribution (congruent to 1 X 10(-3) at T-C = 160 +/- 5 K). This extra contribution sharply decreases at T-C as a consequence of the metal (M)-insulator (I) transition, and is suppressed under an applied magnetic field. This shows that the transition to the M state is induced by the field in the I regime, producing strong magnetoelastic effects. The present results demonstrate the close relationship between magnetoelastic and magnetotransport properties in this compound.

引用

页码：3541 / 3544

页数：4

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