Effects of Dy3+ ions on the magnetic and transport properties of La-1.3-yDy(y)Sr(1.7)Mn(2)O(7)

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	Effects of Dy3+ ions on the magnetic and transport properties of La-1.3-yDy(y)Sr(1.7)Mn(2)O(7)
	Ma, M ; Kou, ZQ ; Di, NL ; Cheng, ZH ; Li, QA
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2005
卷号	285 期号:3 页码:439
关键词	GIANT MAGNETORESISTANCE MANGANESE OXIDES
ISSN号	0304-8853
通讯作者	Ma, M: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	The crystallization kinetics of amorphous Fe68.5Si13.5B9Cu1Nb3C5 (at. pct) melt-spun ribbons were studied by the DSC method in the mode of continuous heating. The apparent activation energy E-p1 and E-p2 (373.07+/-7.92 and 518.75+/-21.35 kJ/mol, respectively) derived from the Kissinger plots were calculated by the peak temperatures TO, T-p2, which display a strong dependence on the heating rates. The crystallization behavior during isothermal annealing at 823 K for 1, 5, 10 h and 973 K for 5 h were investigated using XRD and TEM. The results show that crystallization behavior becomes completely different from that of FINEMET. It is not bcc alpha-Fe (Si) but metastable fcc gamma-Fe (Si) that participates in the first crystallization step combining the appearance of Fe23B6 and Nb2B. Therefore, the addition of C promotes the combination of Fe and B. Fe3.5B is participated in the second step together with the disappearing of Fe23B6, which indicates that transition Fe23B6-->Fe3.5B+Fe2B presumably happens. gamma-Fe (Si) with peculiar stability cannot transform into nano-sized a-Fe (Si) crystals until the amorphous ribbons were annealed for 5 h at 973 K.
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/311004/36701]
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	Ma, M,Kou, ZQ,Di, NL,et al. Effects of Dy3+ ions on the magnetic and transport properties of La-1.3-yDy(y)Sr(1.7)Mn(2)O(7)[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2005,285(3):439.
APA	Ma, M,Kou, ZQ,Di, NL,Cheng, ZH,&Li, QA.(2005).Effects of Dy3+ ions on the magnetic and transport properties of La-1.3-yDy(y)Sr(1.7)Mn(2)O(7).JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,285(3),439.
MLA	Ma, M,et al."Effects of Dy3+ ions on the magnetic and transport properties of La-1.3-yDy(y)Sr(1.7)Mn(2)O(7)".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 285.3(2005):439.