Magnetocaloric effect of half-doped manganite Nd0.5Ca0.25Sr0.25MnO3

被引：13

作者：

Fan, Jiyu ^{[1
]}

Hong, Bo ^{[2
]}

Lu, Di ^{[1
]}

Shi, Yangguang ^{[1
]}

Ling, Langsheng ^{[3
]}

Zhang, Lei ^{[3
]}

Tong, Wei ^{[3
]}

Pi, Li ^{[4
]}

Zhang, Yuheng ^{[4
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Appl Phys, Nanjing 210016, Peoples R China

[2] China Jiliang Univ, Dept Mat Engn, Hangzhou 310018, Zhejiang, Peoples R China

[3] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China

[4] Univ Sci & Technol China, High Field Magnet Lab, Hefei 230026, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 15期

关键词：

Magnetocaloric effect; Entropy; Perovskite manganites; MAGNETIC ENTROPY CHANGE;

D O I：

10.1016/j.physb.2010.04.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In the present work, the magnetic entropy change of the half-doped Nd0.5Ca0.25Sr0.25MnO3 manganite has been investigated. The measurement of isothermal magnetization around Curie temperature reveals the maximum isothermal magnetic entropy change of 1.85 and 0.77 J/kg K for Delta H = 3.0 and 1.0T magnetic field variation, respectively. In addition, from the data of heat capacity, we find the adiabatic temperature change of 0.88 K for a magnetic field variation of 3.0T. Though only a moderate magnetic entropy change and a small adiabatic temperature change were obtained, a considerable large relative cooling power (140 J/kg as Delta H = 3.0T) and a wide temperature range (74 K as Delta H = 3.0T) were found in this sample, this ensure it to be a promising candidate for the actual magnetic refrigerant materials. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：3120 / 3123

页数：4

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