Magnetic field-induced martensitic transformation, superspin glass and exchange bias in Heusler alloys NiCoMnSn

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	Magnetic field-induced martensitic transformation, superspin glass and exchange bias in Heusler alloys NiCoMnSn
	Zhang, HW ; Zhou, WP ; Liu, EK ; Wang, WH ; Wu, GH
刊名	ACTA PHYSICA SINICA
	2013
卷号	62 期号:14
关键词	NiCoMnSn Heusler alloys superspin glass exchange bias
ISSN号	1000-3290
通讯作者	Zhou, WP (reprint author), Inner Mongolia Univ, Hohhot 010021, Peoples R China.
中文摘要	The crystal structures and magnetic properties of Ni50-xCoxMn39Sn11 (8 <= x <= 10) Hensler 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 Hensler Mn2Ni1.6Sn0.4 alloys [Ma L, Wang W H, Liu J B, Li J Q, Zhen M, Hou DL and Wu G H 2011 Appl. Phys. Lett. 99 182507].
资助信息	National Natural Science Foundation of China [11164017]; Inner Mongolia University "211 Engineering" Cultivation of Innovative Talents Project, China [51071172]
语种	中文
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57189]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, HW,Zhou, WP,Liu, EK,et al. Magnetic field-induced martensitic transformation, superspin glass and exchange bias in Heusler alloys NiCoMnSn[J]. ACTA PHYSICA SINICA,2013,62(14).
APA	Zhang, HW,Zhou, WP,Liu, EK,Wang, WH,&Wu, GH.(2013).Magnetic field-induced martensitic transformation, superspin glass and exchange bias in Heusler alloys NiCoMnSn.ACTA PHYSICA SINICA,62(14).
MLA	Zhang, HW,et al."Magnetic field-induced martensitic transformation, superspin glass and exchange bias in Heusler alloys NiCoMnSn".ACTA PHYSICA SINICA 62.14(2013).