Metastability around the insulator-metal transition in La0.2Pr0.5Ca0.3MnO3

被引：13

作者：

Chatterjee, S. ^{[1
]}

Giri, S. ^{[1
]}

Majumdar, S. ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, India

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 11期

关键词：

calcium compounds; galvanomagnetic effects; lanthanum compounds; magnetoresistance; metal-insulator transition; phase separation; praseodymium compounds; PHASE-SEPARATION; MANGANITES; MAGNETORESISTANCE;

D O I：

10.1063/1.3429248

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic and magnetotransport properties of the doped manganite with nominal composition La0.2Pr0.5Ca0.3MnO3 are studied around the first order insulator-metal transition. The region across the first order transition is found to be highly metastable with the coexisting metallic and insulating phases. The sample shows anomalous transport and magnetic behaviors, which is related to the field-induced arrested state in the region of phase separation. A large magnetoresistance is also present in the sample at the lowest temperature of measurements (well below the first order transition), which is possibly connected to the effect of electron tunneling through grain boundaries. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3429248]

引用

页数：5

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