MAGNETIC-PROPERTIES OF FE-CR ULTRAFINE PARTICLES

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	MAGNETIC-PROPERTIES OF FE-CR ULTRAFINE PARTICLES
	WEI, G ; HUA, L ; ZHAO, ZR ; HADJIPANAYIS, GC ; PAPAEFTHYMIOU, VP ; KOSTIKAS, A ; SIMOPOUOS, A
刊名	JOURNAL OF APPLIED PHYSICS
	1991
卷号	70 期号:10 页码:5900
关键词	IRON-CHROMIUM ALLOYS MAGNETORESISTANCE FERROMAGNETISM SUPERLATTICES LAYERS
ISSN号	0021-8979
通讯作者	WEI, G: CHINESE ACAD SCI,INST PHYS,BEIJING 100080,PEOPLES R CHINA.
中文摘要	Fe100-xCrx ultrafine particles (UFP) with x = 5-55 and a size in the range of 100-500 angstrom have been prepared by the gas evaporation method using Ar gas pressures P = 2, 5, and 8 Torr. Transmission electron microscopy with energy dispersive x-ray analysis showed that the composition and structure of the UFPs was the same as in the original bulk alloy. The coercivity H(c) at room temperature for the Fe95Cr5, Fe90Cr10, and Fe80Cr20 UFPs reached values up to 1250, 780, and 625 Oe, respectively. The temperature coefficients of these UFPs a(H(c)) = -0.09%/degrees-C were much smaller tha those of Fe in the temperature range of 20-450-degrees-C when x less-than-or-equal-to 20. A strong antiferromagnetic coupling between Fe and Cr appeared in the small particles. Both the coercivity and saturation magnetization were found to decrease with Cr addition. For samples with x = 50%-60%, H(c) = 200-300 Oe, and M(s) = 30-60 emu/g.
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/311004/41509]
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	WEI, G,HUA, L,ZHAO, ZR,et al. MAGNETIC-PROPERTIES OF FE-CR ULTRAFINE PARTICLES[J]. JOURNAL OF APPLIED PHYSICS,1991,70(10):5900.
APA	WEI, G.,HUA, L.,ZHAO, ZR.,HADJIPANAYIS, GC.,PAPAEFTHYMIOU, VP.,...&SIMOPOUOS, A.(1991).MAGNETIC-PROPERTIES OF FE-CR ULTRAFINE PARTICLES.JOURNAL OF APPLIED PHYSICS,70(10),5900.
MLA	WEI, G,et al."MAGNETIC-PROPERTIES OF FE-CR ULTRAFINE PARTICLES".JOURNAL OF APPLIED PHYSICS 70.10(1991):5900.