CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Prev
Next
|
|
|
Magnetic properties and magnetocaloric effects in Er1-xGdxCoAl intermetallic compounds |
Gao Xin-Qiang (高新强)a b, Mo Zhao-Jun (莫兆军)a b, Shen Jun (沈俊)b, Li Ke (李珂)b, Dai Wei (戴巍)b, Wu Jian-Feng (吴剑峰)b, Tang Cheng-Chun (唐成春)a |
a School of Material Science and Engineering, Hebei University of Technology, Tianjin 300384, China; b Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
|
|
Abstract The magnetism and magnetocaloric effect in Er1-xGdxCoAl (x = 0, 0.1, 0.2, 0.4, 0.6, 0.8, 1) were investigated. The Er1-xGdxCoAl compounds were synthesized by arc melting. With the increasing Gd content, the Néel temperature (TN) linearly increases from 14 K to 102 K, while the magnetic entropy change (-Δ SM) tends to decrease nonmonotonously. Under the field change from 0 T to 5 T, the-Δ SM of the compounds with x = 0.2-1 are stable around 10 J/kg ·K, then a cooling platform between 20 K and 100 K can be formed by combining these compounds. For x = 0.6, 0.8, 1.0, the compounds undergo two successive magnetic transitions, one antiferromagnetism to ferromagnetism and the other ferromagnetism to paramagnetism, with increasing temperature. The two continuous magnetic transitions in this series are advantageous to broaden the temperature span of half-peak width (δ T) in the-Δ xM-T curve and improve the refrigeration capacity.
|
Received: 16 October 2014
Revised: 05 April 2015
Accepted manuscript online:
|
PACS:
|
75.30.Sg
|
(Magnetocaloric effect, magnetic cooling)
|
|
65.40.gd
|
(Entropy)
|
|
75.30.Kz
|
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51322605 and 51271192). |
Corresponding Authors:
Shen Jun, Tang Cheng-Chun
E-mail: jshen@mail.ipc.ac.cn;tangcc@hebut.edu.cn
|
Cite this article:
Gao Xin-Qiang (高新强), Mo Zhao-Jun (莫兆军), Shen Jun (沈俊), Li Ke (李珂), Dai Wei (戴巍), Wu Jian-Feng (吴剑峰), Tang Cheng-Chun (唐成春) Magnetic properties and magnetocaloric effects in Er1-xGdxCoAl intermetallic compounds 2015 Chin. Phys. B 24 097502
|
[1] |
Jia L, Sun J R, Zhang H W, Hu F X, Dong C and Shen B G 2006 J. Phys.: Condens. Mater 18 9999
|
[2] |
Dagula W, Tegus O, Li X W, Song L, Brück E, Cam Thanh D T, de Boer F R and Buschow K H J 2006 J. Appl. Phys. 99 08Q105
|
[3] |
Phan M H, Tian S B, Hoang D Q, Yu S C, Nguyen C and Ulyanov A N 2003 J. Magn. Magn. Mater. 258-259 309
|
[4] |
Zhang H, Shen B G, Xu Z Y, Chen J, Shen J, Hu F X and Sun J R 2011 J. Alloys Compd. 509 2602
|
[5] |
Hu F X, Shen B G, Sun J R and Zhang X X 2000 Chin. Phys. 9 550
|
[6] |
Shen J, Gao B, Yan L Q, Li Y X, Zhang H W, Hu F X and Sun J R 2007 Chin. Phys. 16 3848.
|
[7] |
Hu F X, Shen B G, Sun J R, Cheng Z H, Rao G H and Zhang X X 2001 Appl. Phys. Lett. 78 3675
|
[8] |
Wada H and Tanabe Y 2001 Appl. Phys. Lett. 79 3302
|
[9] |
Tegus O, Brück E, Buschow K H J and de Boer F R 2002 Nature 415 150
|
[10] |
Tegus O, Bao L H, and Song L 2013 Chin. Phys. B 22 037506
|
[11] |
Geng Y X, Tegus O and Bi L G 2012 Chin. Phys. B 21 037504
|
[12] |
Brück E, Ilyn M, Tishin A M and Tegus O 2005 J. Magn. Magn. Mater. 290-291 8
|
[13] |
Balli M, Fruchart D, Gignoux D and Zach R 2009 Appl. Phys. Lett. 95 072509
|
[14] |
Shen B G, Sun J R, Hu F X, Zhang H W and Cheng Z H 2009 Adv. Mater. 21 4545
|
[15] |
Zhang X X, Wang F W and Wen G H 2001 J. Phys.: Condens. Matter 13 L747
|
[16] |
Jarosz J, Talik E, Mydlarz T, Kusz J, Bohm H and Winiarski A 2000 J. Magn. Magn. Mater. 208 169
|
[17] |
Chiu L B, Elliston P R, Stewart A M, Taylor K N R and Issa M A A 1980 J. Phys. F 10 2297
|
[18] |
Fu H, Ma Z, Zhang X J, Wang D H, Teng B H and Agurgo Balfour E 2014 Appl. Phys. Lett. 104 072401
|
[19] |
O'Handley R C 2000 Modern Magnetic Materials-Principles and Applications (New York: Wiley) p. 202
|
[20] |
Yan L Q, Chun S H, Sun Y, Shin K W, Jeon B G, Shen S P and Kim K H 2013 J. Phys.: Condens. Matter 25 256006
|
[21] |
Mo Z J, Shen J, Yan L Q, Wu J F, Tang C C and Shen B G 2013 J. Appl. Phys. 113 033908
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|