Large enhancement of exchange bias in CoFe/CrPt films through interfacial Mn addition

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	Large enhancement of exchange bias in CoFe/CrPt films through interfacial Mn addition
	Dai, B ; Cai, JW ; Lai, WY ; Liu, YZ ; Zhang, Z ; Meng, FB ; Li, YX
刊名	JOURNAL OF APPLIED PHYSICS
	2006
卷号	99 期号:7
关键词	MAGNETIC TUNNEL-JUNCTIONS SPACER LAYER NONMAGNETIC SPACER ANISOTROPY MAGNETORESISTANCE MULTILAYERS DIFFUSION NI81FE19 PHASE
ISSN号	0021-8979
通讯作者	Cai, JW: Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100080, Peoples R China.
中文摘要	The antiferromagnetic L1(0) CrPt film synthesized through annealing equiatomic [Pt/Cr] multilayer stack can pin the adjacent Co0.9Fe0.1 film with medium exchange anisotropy and high stability. It has been found that when an ultrathin Mn layer is inserted between the Co0.9Fe0.1 film and the [Pt/Cr] multilayer, the exchange anisotropy of the CoFe/CrPt film is enlarged fourfold, reaching 0.48 erg/cm(2) at room temperature, which is comparable to the best room-temperature result ever achieved in all practical biasing materials except the ordered IrMn3. Nevertheless, the interfacial Mn addition does not lower the high blocking temperature of CoFe/CrPt films with its remaining value of 600 degrees C. The structural characterization reveals that the added Mn atoms still distribute around the interface when the [Pt/Cr] multilayer is transformed into ordered CrPt film after annealing. It seems that the Mn atoms are preferably combined with the neighboring Pt/Cr layers during the annealing to form a modified interfacial antiferromagnetic layer, most likely (Cr1-delta Mn delta)Pt with L1(0) phase, which results in the significant enhancement of the exchange bias, meanwhile, the high thermal stability is sustained because of the strong exchange coupling between interfacial antiferromagnetic (Cr1-delta Mn delta)Pt and CrPt layers. (c) 2006 American Institute of Physics.
收录类别	SCI
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40587]
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	Dai, B,Cai, JW,Lai, WY,et al. Large enhancement of exchange bias in CoFe/CrPt films through interfacial Mn addition[J]. JOURNAL OF APPLIED PHYSICS,2006,99(7).
APA	Dai, B.,Cai, JW.,Lai, WY.,Liu, YZ.,Zhang, Z.,...&Li, YX.(2006).Large enhancement of exchange bias in CoFe/CrPt films through interfacial Mn addition.JOURNAL OF APPLIED PHYSICS,99(7).
MLA	Dai, B,et al."Large enhancement of exchange bias in CoFe/CrPt films through interfacial Mn addition".JOURNAL OF APPLIED PHYSICS 99.7(2006).