Heusler合金NiCoMnSn中的磁场驱动马氏体相变、超自旋玻璃和交换偏置

张洪武; 周文平; 刘恩克; 王文洪; 吴光恒

doi:10.7498/aps.62.147501

摘要

合成了一系列Ni50-xCoxMn39Sn11 (8≤x≤10) 样品, 并对它们的结构和磁性进行了研究. 发现随Co含量的增加, 样品的饱和磁化强度逐渐增强, 并在Ni42Co8Mn39Sn11中实现了磁场诱发马氏体相变. 另外, 在Co大于8.0的成分中探测到了超自旋玻璃, 并且观察到交换偏置现象. 证实了超自旋玻璃的马氏体相和铁磁奥氏体母相共存, 这也是产生交换偏置的原因.我们猜测超自旋玻璃的形成可能是来源于Mn-Mn团簇的存在, 这和之前报道的Mn2Ni1.6Sn0.4 的结果相一致[1].

关键词:

Abstract

The crystal structures and magnetic properties of Ni50-xCoxMn39Sn11 (8≤x≤10) Heusler alloys are investigated. As a result, we achieve the magnetic field induced martensitic transformation in Ni42Co8Mn39Sn11. It is found that the saturation magnetic moments of alloys increase with Co content increasing. Moreover, a superspin glass behavior and a large exchange bias effect are also found in samples with Co content being higher than 8. We confirm the coexistence of superspin glass of the martensite and ferromagnetic parent phase, which is the physical origin of the exchange bias effect. On the other hand, we propose that the origin of superspin glass in our NiMnCoSn system is due to the occurence of Mn-Mn cluster as reported by Ma et al. in Heusler Mn2Ni1.6Sn0.4 alloys [Ma L, Wang W H, Liu J B, Li J Q, Zhen M, Hou D L and Wu G H 2011 Appl. Phys. Lett. 99 182507].

Keywords:

作者及机构信息

1.
内蒙古大学物理科学与技术学院, 呼和浩特 010021;

2.
中国科学院物理研究所, 磁学国家重点实验室, 北京 100190;

3.
北京经济技术职业学院, 东燕郊 065202

基金项目: 国家自然科学基金(批准号: 11164017)和内蒙古大学“211工程”创新人才培养项目(批准号: 51071172)资助的课题.

Authors and contacts

1.
Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China;

2.
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;

3.
Beijing Institute of Business and Technology, East Yanjiao 065202, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11164017) and the Inner Mongolia University “211 Engineering” Cultivation of Innovative Talents Project, China (Grant No. 51071172).

参考文献

[1]	Ma L, Wang W H, Lu J B, Li J Q, Zhen C M, Hou D L, Wu G H 2011 Appl. Phys. Lett. 99 182507
[2]	Heusler F 1903 Deut. Phys. Ges. 5 219
[3]	Kasper J, Roberts B 1956 Phys. Rev. 101 537
[4]	Liu Z H, Li G T, Wu Z G, Ma X Q, Liu Y, Wu G H 2012 J. Alloys. Compd. 535 120
[5]	Webster P J, Ziebeck K R A, Town S L, Peak M S 1984 Phil. Mag. B 49 295
[6]	Ullakko K, Huang J K, Kantner C, O'Handley R C, Kokorin V V 1996 Appl. Phys. Lett. 69 1966
[7]	Wu G H, Yu C H, Meng L Q, Chen J L, Yang F M, Qi S R, Zhan W S, Wang Z, Zheng Y F, Zhao L C 1999 Appl. Phys. Lett. 75 2990
[8]	Murray S J, Marioni M, Allen S M, O'Handley R C, Lograsso T A 2000 Appl. Phys. Lett. 77 886
[9]	Kainuma R, Imano Y, Ito W, Souto Y, Morito H, Okmoto S, Kitakami O, Oikawa K, Fujita A, Kanomata T, Ishida K 2006 Nature 439 957
[10]	Ma L, Zhu Z Y, Yu S D, Zhou Q, Chen J L, Wu G H 2009 Acta Phys. Sin. 58 3479 (in Chinese) [马丽, 朱志永, 于世丹, 周强, 陈京兰, 吴光恒 2009 物理学报 58 3479]
[11]	Zhang H L, Li Z, Qiao Y F, Cao S X, Zhang J C, Jing C 2009 Acta Phys. Sin. 58 7857 (in Chinese) [张浩磊, 李哲, 乔燕飞, 曹世勋, 张金仓, 敬超 2009 物理学报 58 7857]
[12]	Jing C, L Zhe, Chen J P, Lu Y M, Cao S X, Zhang J C 2007 Acta Phys. Sin. 57 3781 (in Chinese) [敬超, 李哲, 陈继萍, 鲁玉明, 曹世勋, 张金仓 2007 物理学报 57 3781]
[13]	Yu S Y, Ma L, Liu G D, Liu Z H, Chen J L, Cao Z X, Wu G H, Zhang B, Zhang X X 2007 Appl. Phys. Lett. 90 242501
[14]	Cong D Y, Roth S, Schultz L 2012 Acta Mater. 60 5335
[15]	Cong D Y, Roth S, Pöschke M, Hrrich C, Schultz L 2010 Appl. Phys. Lett. 97 021908
[16]	Li P P, Wang J M, Jiang C B 2011 Chin. Phys. B 20 028104
[17]	Ma Y, Yang S, Jin W, Liu X 2009 J. Alloys Compd. 471 570
[18]	Tang X D, Wang W H, Zhu W, Liu E K, Wu G H, Meng F B, Liu H Y, Luo H Z 2010 Appl. Phys. Lett. 97 242513

施引文献

[1]	Ma L, Wang W H, Lu J B, Li J Q, Zhen C M, Hou D L, Wu G H 2011 Appl. Phys. Lett. 99 182507
[2]	Heusler F 1903 Deut. Phys. Ges. 5 219
[3]	Kasper J, Roberts B 1956 Phys. Rev. 101 537
[4]	Liu Z H, Li G T, Wu Z G, Ma X Q, Liu Y, Wu G H 2012 J. Alloys. Compd. 535 120
[5]	Webster P J, Ziebeck K R A, Town S L, Peak M S 1984 Phil. Mag. B 49 295
[6]	Ullakko K, Huang J K, Kantner C, O'Handley R C, Kokorin V V 1996 Appl. Phys. Lett. 69 1966
[7]	Wu G H, Yu C H, Meng L Q, Chen J L, Yang F M, Qi S R, Zhan W S, Wang Z, Zheng Y F, Zhao L C 1999 Appl. Phys. Lett. 75 2990
[8]	Murray S J, Marioni M, Allen S M, O'Handley R C, Lograsso T A 2000 Appl. Phys. Lett. 77 886
[9]	Kainuma R, Imano Y, Ito W, Souto Y, Morito H, Okmoto S, Kitakami O, Oikawa K, Fujita A, Kanomata T, Ishida K 2006 Nature 439 957
[10]	Ma L, Zhu Z Y, Yu S D, Zhou Q, Chen J L, Wu G H 2009 Acta Phys. Sin. 58 3479 (in Chinese) [马丽, 朱志永, 于世丹, 周强, 陈京兰, 吴光恒 2009 物理学报 58 3479]
[11]	Zhang H L, Li Z, Qiao Y F, Cao S X, Zhang J C, Jing C 2009 Acta Phys. Sin. 58 7857 (in Chinese) [张浩磊, 李哲, 乔燕飞, 曹世勋, 张金仓, 敬超 2009 物理学报 58 7857]
[12]	Jing C, L Zhe, Chen J P, Lu Y M, Cao S X, Zhang J C 2007 Acta Phys. Sin. 57 3781 (in Chinese) [敬超, 李哲, 陈继萍, 鲁玉明, 曹世勋, 张金仓 2007 物理学报 57 3781]
[13]	Yu S Y, Ma L, Liu G D, Liu Z H, Chen J L, Cao Z X, Wu G H, Zhang B, Zhang X X 2007 Appl. Phys. Lett. 90 242501
[14]	Cong D Y, Roth S, Schultz L 2012 Acta Mater. 60 5335
[15]	Cong D Y, Roth S, Pöschke M, Hrrich C, Schultz L 2010 Appl. Phys. Lett. 97 021908
[16]	Li P P, Wang J M, Jiang C B 2011 Chin. Phys. B 20 028104
[17]	Ma Y, Yang S, Jin W, Liu X 2009 J. Alloys Compd. 471 570
[18]	Tang X D, Wang W H, Zhu W, Liu E K, Wu G H, Meng F B, Liu H Y, Luo H Z 2010 Appl. Phys. Lett. 97 242513

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