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| 钙钛矿结构锰氧化物LaMn0.9Mg0.1O3的磁熵效应 | |
| 引用本文： | 张晓霞,刘红艳,贾艳华,王淑娟,肖莲萍,刘允涛,孔文君.钙钛矿结构锰氧化物LaMn0.9Mg0.1O3的磁熵效应[J].吉林地质,2007,26(1):66-70. |
| 作者姓名： | 张晓霞 刘红艳 贾艳华 王淑娟 肖莲萍 刘允涛 孔文君 |
| 作者单位： | 1. 吉林大学无机合成与制备国家重点实验室,吉林,长春,130012;吉林省第一地质调查所实验室,吉林,长春,130031 2. 吉林大学测试科学实验中心,吉林,长春,130026 3. 吉林省第一地质调查所实验室,吉林,长春,130031 |
| 摘 要： | 采用传统的固相反应制备了钙钛矿结构锰氧化物L aM n0.9M g0.1O3多晶样品,并对其磁熵效应进行了研究。通过测量不同磁场下的磁化-温度曲线,发现伴随铁磁-顺磁相转变有一个大的磁熵变化,这个结果表明钙钛矿锰氧化物可以作为磁制冷技术中制冷材料。 |
| 关 键 词： | 钙钛矿 锰氧化物 磁熵 制冷 |
| 文章编号： | 1001-2427（2007）01-066-05 |
| 收稿时间： | 2006-09-26 |
| 修稿时间： | 2007-01-15 |
Magnetic entropy change in perovskite-type manganese oxides LaMn0.9Mg0.1O3 |
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| ZHANG Xiao-xia,LIU Hong-yan,JIA Yan-hua,WANG Shu-juan,XIAO Lian-ping,LIU Yun-tao,KONG Wen-jun.Magnetic entropy change in perovskite-type manganese oxides LaMn0.9Mg0.1O3[J].Jilin Geology,2007,26(1):66-70. | |
| Authors: | ZHANG Xiao-xia LIU Hong-yan JIA Yan-hua WANG Shu-juan XIAO Lian-ping LIU Yun-tao KONG Wen-jun |
| Institution: | 1. National Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China; 2. The First Geologic Survey of Jilin Province, Changchun 130031, China; 3. Center of Testing and Science Experiment, Jilin University, Changchun 130026, China |
| Abstract: | The magnetic entropy change in the perovskite-type manganese oxide LaMn(0.9)Mg(0.1)O3 is studied.Through the measurement of magnetization and temperature curves in different magnetic fields,it was found that there is a large magnetic entropy change associated with the ferromagnetic-paramagnetic transition.This result shows that perovskite manganites can be suitable candidates as working substances in magnetic refrigeration technology. |
| Keywords: | perovskite manganese magnetic entropy refrigeration |
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