Magnetic properties and magnetic-domain structures of nanocrystalline Sm(2)Fe(14.)5Cu(0.5)Ga(2)Cy and Sm2Fe15Ga2C1.0 ribbons prepared by melt-spinning

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	Magnetic properties and magnetic-domain structures of nanocrystalline Sm(2)Fe(14.)5Cu(0.5)Ga(2)Cy and Sm2Fe15Ga2C1.0 ribbons prepared by melt-spinning
	Zhang, SY ; Sun, ZG ; Zhang, HW ; Han, BS ; Shen, BG ; de Boer, FR ; Buschow, KHJ
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	1999
卷号	32 期号:23 页码:2990
关键词	ALLOYS
ISSN号	0022-3727
通讯作者	Zhang, SY: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	The magnetic properties and magnetic-domain structures of nanocrystalline Sm2Fe14.5Cu0.5Ga2Cy (y = 0-2.0) and Sm2Fe15Ga2C1.0 alloys prepared directly by melt-spinning were studied and compared with the case of over-quenching and annealed ribbons. The coercivity reaches a maximum value at a wheel speed of upsilon(2) = 12.5-15 m s(-1) for Sm2Fe14.5Cu0.5Ga2Cy (y = 0-2.0), and 17.5 m s(-1) for Sm2Fe15Ga2C1.0. The coercivity increases significantly with increasing carbon content and reaches a maximum at y = 1.0-1.5. An increase in coercivity was also observed upon addition of a small amount of Cu. The maximum coercivity mu(0)H(c) at room temperature, obtained for the various ribbons at their optimal upsilon(s) value, is 2.2 T for Sm2Fe14.5Cu0.5Ga2C1.5 and Sm2Fe14.5Cu0.5Ga2C1.0, and 1.8 T for Sm2Fe15Ga2C1.0. The magnetic-domain structure was investigated by using magnetic force microscopy. Themagnetic-domain-length scale is 100-300 nm and 200-500 nm for Sm2Fe14.5Cu0.5Ga2C1.5 and Sm2Fe15Ga2C1.0 ribbons, respectively. Due to interactions between the grains, these values are larger than the grain size. In carbon-free Sm2Fe14.5Cu0.5Ga2 ribbons, the interaction strength between the magnetic tip and the sample is weaker than in Sm2Fe14.5Cu0.5Ga2C1.5 ribbons. The phenomenon of remanence enhancement was observed in all ribbons with carbon.
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/311004/41297]
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, SY,Sun, ZG,Zhang, HW,et al. Magnetic properties and magnetic-domain structures of nanocrystalline Sm(2)Fe(14.)5Cu(0.5)Ga(2)Cy and Sm2Fe15Ga2C1.0 ribbons prepared by melt-spinning[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,1999,32(23):2990.
APA	Zhang, SY.,Sun, ZG.,Zhang, HW.,Han, BS.,Shen, BG.,...&Buschow, KHJ.(1999).Magnetic properties and magnetic-domain structures of nanocrystalline Sm(2)Fe(14.)5Cu(0.5)Ga(2)Cy and Sm2Fe15Ga2C1.0 ribbons prepared by melt-spinning.JOURNAL OF PHYSICS D-APPLIED PHYSICS,32(23),2990.
MLA	Zhang, SY,et al."Magnetic properties and magnetic-domain structures of nanocrystalline Sm(2)Fe(14.)5Cu(0.5)Ga(2)Cy and Sm2Fe15Ga2C1.0 ribbons prepared by melt-spinning".JOURNAL OF PHYSICS D-APPLIED PHYSICS 32.23(1999):2990.