Gd基非晶与Gd纳米晶复合结构的磁制冷效应

王永田; 刘宗德; 易军; 薛志勇

doi:10.7498/aps.61.056102

摘要

通过调控冷却速率和成分配比, 制备出了Gd基非晶与Gd纳米晶的复合材料. 采用X射线衍射、热分析、原子力和磁力显微镜对其微结构进行表征, 从多个角度证实了非晶/纳米晶的复合结构. 磁性测试结果表明: 内生的纳米晶颗粒能有效改善非晶基体的磁熵效应, 相对于Gd基块体纯非晶和Gd单质, 复合体系的磁制冷效率大幅提高达到了103 J. kg-1; 磁熵变化峰Sm的半高宽超过纯Gd的5倍; 最大磁熵变区出现平台区, 但Sm峰值有待于进一步提高. 理论分析表明, 复合结构中超顺磁纳米团簇的形成有效提高了磁制冷温区和效率. 结合磁滞小和电阻大等优点, Gd基非晶/Gd纳米晶复合材料具有一定的发展潜力.

关键词:

非晶 /
磁制冷效应 /
纳米晶

Abstract

The Gd-based amorphous/nanocrystal composite is prepared by controlling the cooling rate and the element ratio. The X-ray diffraction, differential scanning calorimeter and atomic force microscope/magnetic force microscope are used to confirm the composite microstructures from different perspectives. The magnetic test shows the great enhancement of magnetocaloric effect in the metallic glassy composite. The large magnetic refrigerant capacity (RC) up to 103 J. kg-1 is more than double the RC values of the Gd-based bulk metallic glass and pure Gd. The full width at half maximum of the magnetic entropy change (Sm) peak almost spreads over the whole low-temperature range, which is five times wider than that of the pure Gd. The maximum Sm approaches a nearly constant value in a wide temperature span (over 80 K). The super paramagnetic nanoclusters of the composite increase the magnetic refrigerant capacity greatly. In combination with the low magnetic hysteresis and large resistance, the metallic glass composite may be a potential candidate for the ideal Ericsson-cycle magnetic refrigeration.

Keywords:

作者及机构信息

1.
华北电力大学电站设备状态监测与控制教育部重点实验室, 北京 102206;

2.
华北电力大学苏州研究院, 苏州 215123;

3.
中国科学院物理研究所, 北京 100190

基金项目: 国家自然科学基金(批准号: 51101056, 51006034)、国家重点基础研究发展计划(批准号: 2011CB710706)、新金属材料国家重点实验室开放基金(批准号: 2010Z-02) 和苏州市科技计划项目(批准号: SYG201002)资助的课题.

Authors and contacts

1.
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing 102206, China;

2.
The Suzhou Research Institute of North China Electric Power University, Suzhou 215123, China;

3.
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 51101056, 51006034), the National Basic Research Program of China (Grant No. 2011CB710706), the State Key Laboratory of Advanced Metals and Materials, China (Grant No.2010Z-02), and the Planned Science and Technology Project of Suzhou City, China (Grant No.SYG201002).

参考文献

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[13]	Wei B C, Zhang Y, Zhuang Y X, Zhao D Q, Pan M X, Wang W H2000 J. Appl. Phys. 89 3529
[14]	Yano K, Akiyama Y, Tokumitsu K, Kita E, Ino H 2000 J. Magn.Magn. Mater. 214 217
[15]	Provenzano V, Shapiro A J, Shull R D 2004 Nature 429 853
[16]	Tegus O, Bruck E, Buschow K H J, de Boer F R 2002 Nature 415150
[17]	Gomesa A M, Proveti J R, Takeuchi A Y, Passamani E C, LaricaC, Guimaraes A P 2006 J. Appl. Phys. 99 116107
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[24]	Shull R D, McMichael R D, Ritter J J 1993 Nanostruct. Mater. 2205
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施引文献

[1]	Zhang H L, Li Z, Qiao Y F, Cao S X, Zhang J C, Jing C 2009 ActaPhys. Sin. 58 7857 (in Chinese) [张浩雷,李哲, 乔燕飞, 曹世勋, 张金仓, 敬超 2009 物理学报 58 7857]
[2]	Liu Z H, Hu F X, Wang W H, Chen J L, Wu G H, Gao S X, Ao L2001 Acta Phys. Sin. 50 233 (in Chinese)[柳祝红,胡风霞, 王文洪, 陈京兰, 吴光恒, 高书侠, 敖玲 2001 物理学报 50 233]
[3]	Jing C, Chen J P, Li Z, Cao S X, Zhang J C 2008 Acta Phys. Sin.57 4450 (in Chinese)[敬超, 陈继萍, 李哲,曹世勋, 张金仓 2008 物理学报 57 4450]
[4]	Chen W, Zhong W, Pan C F, Chang H, Du Y W 2001 Acta Phys.Sin. 50 319 (in Chinese) [陈伟, 钟伟, 潘成福, 常虹,都有为 2001 物理学报 50 319]
[5]	Luo Q, Zhao D Q, Pan M X,WangWH 2006 Appl. Phys. Lett. 89081914
[6]	Luo Q, Zhao D Q, Pan M X,WangWH 2007 Appl. Phys. Lett. 90211903
[7]	Zhang X Y, Fu H, Zu X T, Yu H J 2009 Rare Metal Materials andEngineering 38 431 (in Chinese) [张晓艳, 付浩, 祖小涛,余华军 2009 稀有金属材料与工程 38 431]
[8]	Tang P F, Zhong X C, Zheng Z G, Yu H Y, Qiu W Q, Liu Z W,Ceng D C 2011 J. Magn. Mater. Dev. 42 12 [唐鹏飞,钟喜春, 郑志刚, 余红雅, 邱万奇, 刘仲武, 曾德长 2011磁性材料及器件 42 12]
[9]	Xu Z Y, Hui X, Wang E R, Chang J, Chen G L 2010 J. AlloysComp. 504 S146
[10]	Zheng Z G, Zhong X C, Su K P, Yu H Y, Liu ZW, Zeng D C 2011Sci. China Phys. Mechanics & Astronomy 54 1267
[11]	Kong H Z, Ding J, Dong Z J 2000 J. Phys. D 35 423
[12]	Chen D, Takeuchi A, Inoue A. 2007 J. Alloys Comp. 440 199
[13]	Wei B C, Zhang Y, Zhuang Y X, Zhao D Q, Pan M X, Wang W H2000 J. Appl. Phys. 89 3529
[14]	Yano K, Akiyama Y, Tokumitsu K, Kita E, Ino H 2000 J. Magn.Magn. Mater. 214 217
[15]	Provenzano V, Shapiro A J, Shull R D 2004 Nature 429 853
[16]	Tegus O, Bruck E, Buschow K H J, de Boer F R 2002 Nature 415150
[17]	Gomesa A M, Proveti J R, Takeuchi A Y, Passamani E C, LaricaC, Guimaraes A P 2006 J. Appl. Phys. 99 116107
[18]	Hashimoto T, Kuzuhara T, Matsumoto K, Sahashi M, Imonata K,Tomokiyo A, Yayama H 1987 IEEE Trans. Mag. 23 2847
[19]	Smaili A, Chahine R 1997 J. Appl. Phys. 81 824
[20]	Gorsse S, Chevalier B, Orveillon G 2008 Appl. Phys. Lett. 92122501
[21]	Shao Y Z, Xiong Z Y, Zhang J L, Zhang J X 1996 Acta Phys. Sin.45 1749 (in Chinese)[邵元智, 熊正烨, 张介立, 张进修1996 物理学报 45 1749]
[22]	McMichael R D, Ritter J J, Shull R D 1993 J. Appl. Phys. 736946
[23]	Bennett L H, McMichael R D, Swartzendruber L J, Shull R D1992 J. Magn. Magn. Mater. 104 1094
[24]	Shull R D, McMichael R D, Ritter J J 1993 Nanostruct. Mater. 2205
[25]	Hou X L, Zhou B X, Xu H, Ni J S, Kong J F, Zhang S J 2006 RareMetal Mate Eng. 35 749 (in Chinese)[侯雪玲,周邦新, 徐晖, 倪建森, 孔俊峰, 张少杰 2006 稀有金属材料与工程 35 749]

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