Magnetocaloric properties of nanocrystalline La0.125Ca0.875MnO3

被引：64

作者：

Biswas, Anis ^{[1
]}

Samanta, Tapas ^{[1
]}

Banerjee, S. ^{[1
]}

Das, I. ^{[1
]}

机构：

[1] Saha Inst Nucl Phys, Kolkata 700064, W Bengal, India

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 23期

关键词：

calcium compounds; lanthanum compounds; magnetocaloric effects; nanostructured materials; paramagnetic-antiferromagnetic transitions; particle size; MAGNETORESISTANCE;

D O I：

10.1063/1.3152785

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Some recent experimental studies show the invisibility of antiferromagnetic transition in the cases of manganites when their particle size is reduced to nanometer scale. In complete contrast to these cases, we have observed the signature of antiferromagnetic transition in the magnetocaloric properties of nanocrystalline La0.125Ca0.875MnO3 of average particle sizes 70 and 60 nm similar to its polycrystalline bulk form. The system exhibits inverse magnetocaloric effect in its polycrystalline and nanocrystalline forms. An extra ferromagnetic phase is stabilized at low temperature for the sample with particle size similar to 60 nm.

引用

页数：3

共 30 条

[1] Modification of the charge ordering in Pr1/2Sr1/2MnO3 nanoparticles -: art. no. 124310 [J].