Magnetic and magnetocaloric properties of La0.6Ca0.4-xCexMnO3

被引：4
作者：
Ho, T. A. [1 ]
Lim, S. H. [1 ]
Kim, C. M. [2 ,3 ]
Jung, M. H. [2 ]
Ho, T. O. [4 ]
Tho, P. T. [5 ,6 ]
Phan, T. L. [5 ,6 ]
Yu, S. C. [7 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea
[2] Sogang Univ, Dept Phys, Seoul 04107, South Korea
[3] Sogang Univ, Res Inst Basic Sci, Seoul 04107, South Korea
[4] Vietnam Acad Sci & Technol, Inst Chem, 18 Hoang Quoc Viet, Hanoi, Vietnam
[5] Hankuk Univ Foreign Studies, Dept Phys, Yongin 17035, South Korea
[6] Hankuk Univ Foreign Studies, Oxide Res Ctr, Yongin 17035, South Korea
[7] Chungbuk Natl Univ, Dept Phys, Cheongju 28644, South Korea
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 438卷
基金：
新加坡国家研究基金会;
关键词：
Magnetocaloric effect; Magnetic properties; Perovskite manganites; Magnetic phase transformation; COLOSSAL MAGNETORESISTANCE; ENTROPY CHANGE; SUBSTITUTION; CE; MANGANITES; TRANSITION; TRANSPORT; STATE;
D O I：
10.1016/j.jmmm.2017.04.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
La0.6Ca0.4-xCexMnO3 (x = 0, 0.03, 0.06, and 0.09) compounds are fabricated by a solid-state reaction, and their structural, magnetic, and magnetocaloric properties are investigated. The Curie temperature at which a ferromagnetic-paramagnetic transition occurs decreases from 260 to 221 K as x increases from 0 to 0.09. The saturation magnetization also decreases with the increase of x. The experimental results for the magnetization with respect to the temperature and magnetic field are analyzed using the Banerjee criterion, revealing that all the samples undergo the second-order magnetic phase transition. The maximum magnetic entropy change measured at a magnetic-field span of 50 kOe, which occurs near the Curie temperature, slightly increases from 6.31 to 7.62 J/kg K as x increases from 0 to 0.09. (C) 2017 Elsevier B.V. All rights reserved.
引用
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页码：52 / 59
页数：8
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