Effects of the Mn/Co ratio on the magnetic transition and magnetocaloric properties of Mn1+xCo1-xGe alloys

doi:10.1088/1674-1056/20/8/087502

Abstract We have investigated the magnetic transition and magnetocaloric effects of Mn_1+xCo_1-xGe alloys by tuning the ratio of Mn/Co. With increasing Mn content, a series of first-order magnetostructural transitions from ferromagnetic to paramagnetic states with large changes of magnetization are observed at room temperature. Further increasing the content of Mn (x=0.11) gives rise to a single second-order magnetic transition. Interestingly, large low-field magnetic entropy changes with almost zero magnetic hysteresis are observed in these alloys. The effects of Mn/Co ratio on magnetic transition and magnetocaloric effects are discussed in this paper.

Keywords: Mn/Co ratio magnetic transition magnetocaloric properties magnetic hysteresis losses

Received: 20 February 2011
Revised: 10 March 2011
Accepted manuscript online:

PACS:	75.30.Sg	(Magnetocaloric effect, magnetic cooling)
	75.50.Cc	(Other ferromagnetic metals and alloys)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50701022, 51001019, and 50831006) and the Program for New Century Excellent Talents of China (Grant No. NCET-08-0278).

Cite this article:

Ma Sheng-Can(马胜灿), Wang Dun-Hui(王敦辉), Xuan Hai-Cheng(轩海成), Shen Ling-Jia(沈凌佳), Cao Qing-Qi(曹庆琪), and Du You-Wei(都有为) Effects of the Mn/Co ratio on the magnetic transition and magnetocaloric properties of Mn_1+xCo_1-xGe alloys 2011 Chin. Phys. B 20 087502

[1]	Pecharsky V K and Gschneidner Jr K A 1997 Phys. Rev. Lett. 78 4494
[2]	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
[3]	Tegus O, Brück E, Buschow K H J and de Boer F R 2002 it Nature 415 150
[4]	Yüzüak E, Emre B, Elerman Y and Yücel A 2010 it Chin. Phys. B 19 057501
[5]	Yüzüak E, Dincer I and Elerman Y 2010 Chin. Phys. B 19 037502
[6]	Hamer J B A, Daou R, "Ozcan S, Mathur N D, Fray D J and Sandeman K G 2009 J. Magn. Magn. Mater. 321 3535
[7]	Kanomata T, Ishigaki H, Suzuki T, Yoshida H, Abe S and Kaneko T 1995 J. Magn. Magn. Mater. 140—144 131
[8]	Trung N T, Biharie V, Zhang L, Caron L, Buschow K H J and Brück E 2010 Appl. Phys. Lett. 96 162507
[9]	Trung N T, Zhang L, Caron L, Buschow K H J and Brück E 2010 Appl. Phys. Lett. 96 172504
[10]	Lin S, Tegus O, Brück E, Dagula W, Gortenmulder T J and Buschow K H J 2006 IEEE Trans. Magn. 42 3776
[11]	Wang J T, Wang D S, Chen C, Nashima O, Kanomata T, Mizuseki H and Kawazoe Y 2006 Appl. Phys. Lett. 89 262504
[12]	Sharma V K, Chattopadhyay M K, Shaeb K H B, Chouhan A and Roy S B 2006 Appl. Phys. Lett. 89 222509
[13]	Kainuma R, Imano Y, Ito W, Sutou Y, Morito H, Okamoto S, Kitakami O, Oikawa K, Fujita A, Kanomota T and Ishida K 2006 it Nature 439 957
[14]	Niziol S, Zieba A, Zach R, Baj M and Dmowski L 1983 J. Magn. Magn. Mater. 38 205
[15]	Koyama K, Sakai M, Kanomata T and Watanabe K 2004 Jpn. J. Appl. Phys. Part 1 43 8036
[16]	Fang Y K, Yeh C C, Chang C W, Chang W C, Zhu M G and Li W 2007 Scripta Mater. 57 453
[17]	Liu E K, Zhu W, Feng L, Chen J L, Wang W H, Wu G H, Liu H Y, Meng F B, Luo H Z and Li Y X 2010 Europhys. Lett. 91 17003
[18]	Han Z D, Wang D H, Zhang C L, Xuan H C, Gu B X and Du Y W 2007 Appl. Phys. Lett. 90 042507
[19]	Xuan H C, Zheng Y X, Ma S C, Cao Q Q, Wang D H and Du Y W 2010 J. Appl. Phys. 108 103920
[20]	Krenke T, Acet M, Wassermann E F, Moya X, Ma nosa L and Planes A 2005 Phys. Rev. B 72 014412
[21]	Krenke T, Acet M, Wassermann E F, Moya X, Ma nosa L and Planes A 2006 Phys. Rev. B 73 174413
[22]	Kaprzyk S and Niziol S 1990 J. Magn. Magn. Mater. bf 87 267
[23]	Liu G J, Sun J R, Shen J, Gao B, Zhang H W, Hu F X and Shen B G 2007 Appl. Phys. Lett. 90 032507
[24]	de Oliveira N A and von Ranke P J 2008 Phys. Rev. B bf 77 214439
[25]	Amaral J S and Amaral V S 2009 Appl. Phys. Lett. 94 042506
[26]	Krenke T, Duman E, Acet M, Wassermann E F, Moya X, Ma nosa L and Planes A 2005 Nat. Mater. 4 450
[27]	Pathak A K, Dubenko I, Karaca H E, Stadler S and Ali N 2010 Appl. Phys. Lett. 97 062505

[1]	A novel monoclinic phase and electrically tunable magnetism of van der Waals layered magnet CrTe₂ Qidi Ren(任启迪), Kang Lai(赖康), Jiahao Chen(陈家浩), Xiaoxiang Yu(余晓翔), and Jiayu Dai(戴佳钰). Chin. Phys. B, 2023, 32(2): 027201.
[2]	Incommensurate-commensurate magnetic phase transition in double tungstate Li₂Co(WO₄)₂ Xiyu Chen(陈西煜), Ning Ding(丁宁), Meifeng Liu(刘美风), Tao Zou(邹涛), V. Ovidiu Garlea, Jingwen Gong(龚婧雯), Fei Liu(刘飞), Yunlong Xie(谢云龙), Lun Yang(杨伦), Shuhan Zheng(郑书翰), Xiuzhang Wang(王秀章), Shuai Dong(董帅), T. Charlton, and Jun-Ming Liu(刘俊明). Chin. Phys. B, 2022, 31(4): 047501.
[3]	Quaternary antiferromagnetic Ba₂BiFeS₅ with isolated FeS₄ tetrahedra Shaohua Wang(王少华), Xiao Zhang(张晓), Hechang Lei(雷和畅). Chin. Phys. B, 2019, 28(8): 087401.
[4]	Magnetic properties and magnetocaloric effects in (Ho_1-xY_x)₅Pd₂ compounds X F Wu(武小飞), C P Guo(郭翠萍), G Cheng(成钢), C R Li(李长荣), J Wang(王江), Y S Du(杜玉松), G H Rao(饶光辉), Z M Du(杜振民). Chin. Phys. B, 2019, 28(5): 057502.
[5]	Magnetic transition behavior of perovskite manganites Nd_0.5Sr_0.3Ca_0.2MnO₃ polycrystalline Ru Xing(邢茹), Su-Lei Wan(万素磊), Wen-Qing Wang(王文清), Lin Zheng(郑琳), Xiang Jin(金香), Min Zhou(周敏), Yi Lu(鲁毅), Jian-Jun Zhao(赵建军). Chin. Phys. B, 2016, 25(4): 047601.
[6]	Large reversible magnetocaloric effect induced by metamagnetic transition in antiferromagnetic HoNiGa compound Yi-Xu Wang(王一旭), Hu Zhang(张虎), Mei-Ling Wu(吴美玲), Kun Tao(陶坤), Ya-Wei Li(李亚伟), Tim Yan(颜天宝), Ke-Wen Long(龙克文), Teng Long(龙腾), Zheng Pang(庞铮), Yi Long(龙毅). Chin. Phys. B, 2016, 25(12): 127104.
[7]	Coexistence of positive and negative magnetic entropy changes in CeMn₂(Si_1-xGe_x)₂ compounds Zuo Wen-Liang (左文亮), Hu Feng-Xia (胡凤霞), Sun Ji-Rong (孙继荣), Shen Bao-Gen (沈保根). Chin. Phys. B, 2015, 24(9): 097104.
[8]	Structural and magnetic transition in stainless steel Fe-21Cr-6Ni-9Mn up to 250 GPa Liu Lei (柳雷), Hou Qi-Yue (侯琪玥), Zhang Yi (张毅), Jing Qiu-Min (敬秋民), Wang Zhi-Gang (王志刚), Bi Yan (毕延), Xu Ji-An (徐济安), Li Xiao-Dong (李晓东), Li Yan-Chun (李延春), Liu Jing (刘景). Chin. Phys. B, 2015, 24(6): 066103.
[9]	Influences of P doping on magnetic phase transition and structure in MnCoSi ribbon Du Qian-Heng (杜乾衡), Chen Guo-Fu (陈国富), Yang Wen-Yun (杨文云), Hua Mu-Xin (华慕欣), Du Hong-Lin (杜红林), Wang Chang-Sheng (王常生), Liu Shun-Quan (刘顺荃), Han Jing-Zhi (韩景智), Zhou Dong (周栋), Zhang Yan (张焱), Yang Jin-Bo (杨金波). Chin. Phys. B, 2015, 24(6): 067502.
[10]	Tb doping induced enhancement of anomalous Hall effect in NiFe films Zhu Jia-Peng (朱嘉鹏), Ma Li (马丽), Zhou Shi-Ming (周仕明), Miao Jun (苗君), Jiang Yong (姜勇). Chin. Phys. B, 2015, 24(1): 017101.
[11]	Ferromagnetic materials under high pressure in a diamond-anvil cell：A magnetic study Wang Xin (王鑫), Hu Tian-Li (胡天立), Han Bing (韩冰), Jin Hui-Chao (靳会超), Li Yan (李岩), Zhou Qiang (周强), Zhang Tao (张涛). Chin. Phys. B, 2014, 23(7): 070701.
[12]	Structural changes concurrent with ferromagnetic transition Yang Sen (杨森), Bao Hui-Xin (鲍慧新), Zhou Chao (周超), Wang Yu (王宇), Ren Xiao-Bing (任晓兵), Song Xiao-Ping (宋晓平), Yoshitaka Matsushita, Yoshio Katsuya, Masahiko Tanaka, Keisuke Kobayashi. Chin. Phys. B, 2013, 22(4): 046101.
[13]	Magnetic transition and large reversible magnetocaloric effect in EuCu_1.75P₂ compound Huo De-Xuan (霍德璇), Liao Luo-Bing (廖罗兵), Li Ling-Wei (李领伟), Li Miao (李妙), Qian Zheng-Hong (钱正洪 ). Chin. Phys. B, 2013, 22(2): 027502.
[14]	Magnetic transition of ferromagnetic material at high pressure using a novel system Hu Tian-Li (胡天立), Wang Xin (王鑫), Han Bing (韩冰), Li Yan (李岩), Huang Feng-Xian (黄凤仙), Zhou Qiang (周强), Zhang Tao (张涛). Chin. Phys. B, 2013, 22(12): 120701.
[15]	Magnetic hysteresis and refrigeration capacity of Ni–Mn–Ga alloys near Martensitic transformation Fu Bin(傅斌), Long Yi(龙毅), Duan Jing-Fang(段静芳), Wang Chao-Lun(王超伦), Chang Yong-Qin(常永勤), Ye Rong-Chang(叶荣昌), and Wu Guang-Heng(吴光恒). Chin. Phys. B, 2010, 19(9): 097501.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Effects of the Mn/Co ratio on the magnetic transition and magnetocaloric properties of Mn1+xCo1-xGe alloys

Cite this article:

Online attention

Effects of the Mn/Co ratio on the magnetic transition and magnetocaloric properties of Mn_1+xCo_1-xGe alloys