Effects of magnetic impurities in the t-J model

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	Effects of magnetic impurities in the t-J model
	Hu, ZN ; Pu, FC
刊名	JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
	1999
卷号	32 期号:29 页码:5435
关键词	DIMENSIONAL ELECTRON-GAS OPEN-BOUNDARY-CONDITIONS FINITE-SIZE CORRECTIONS HEAVY-FERMION SYSTEMS HEISENBERG CHAIN LUTTINGER LIQUID KONDO PROBLEM BETHE-ANSATZ QUANTUM GROUPS HUBBARD CHAIN
ISSN号	0305-4470
通讯作者	Hu, ZN: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	Three Fe-rich SmCo5Fex (x = 0, 1 and 2) ribbons were prepared directly by melt spinning using a wheel speed of 25 m s(-1). The x = 2 ribbons possessed the best hard-magnetic properties, intrinsic coericivity 8.2 kOe, saturation magnetization 117.72 emu g(-1), and maximum energy product 16.06 MGOe. The microstructures were investigated by transmission electron microscopy. The x = 0 ribbons showed striated grains with varied compositions, such as SmCo5, SmCo3, Sm54Co46, etc. In contrast, the x = 1 and 2 ribbons showed cellular microstructures. However, the boundary phases were found to be different, Sm(Co,Fe), for the x = 1 ribbons and both Sm(Co,Fe)(3) and Sm-2(Co,Fe)(7) for the x = 2 ribbons. The correlation between magnetic properties and microstructures is discussed in detail. The coercivity mechanism is explained according to the temperature dependence of coercivity by the nucleation model. In turn, the dependence of the small microstructure parameters alpha(k) and N-eff on intergrain exchange coupling were analysed in nanoscale grains of SmCo5Fe2 ribbons.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36764]
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	Hu, ZN,Pu, FC. Effects of magnetic impurities in the t-J model[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,1999,32(29):5435.
APA	Hu, ZN,&Pu, FC.(1999).Effects of magnetic impurities in the t-J model.JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,32(29),5435.
MLA	Hu, ZN,et al."Effects of magnetic impurities in the t-J model".JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 32.29(1999):5435.