Amorphous-crystalline dual-layer structures resulting from metastable liquid phase separation in (Fe50Co25B15Si10)80Cu20 melt-spun ribbons

doi:10.1088/1674-1056/21/8/086102

Abstract (Fe₅₀Co₂₅B₁₅Si₁₀)₈₀Cu₂₀ ribbons are prepared by the single-roller melt-spinning method. A dual-layer structure consisting of a (Fe, Co)-rich amorphous phase and a Cu-rich crystalline phase forms due to metastable liquid phase separation before solidification. The magnetic hysteresis loops of the as-quenched and annealed samples are measured at room temperature. It is indicated that the coercivity of the ribbon is almost zero in as-quenched state. The crystallization leads to the increase of coercivity and decrease of saturation magnetization.

Keywords: amorphous alloy rapid solidification liquid phase separation magnetic property

Received: 28 December 2011
Revised: 05 March 2012
Accepted manuscript online:

PACS:	61.50.Ah	(Theory of crystal structure, crystal symmetry; calculations and modeling)
	64.75.Op	(Phase separation and segregation in alloying)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)
	81.70.Pg	(Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51171152 and 50871088), the Foundation for Fundamental Research of Northwestern Polytechnic University, China (Grant No. JC201268), and the Fund of the State Key Laboratory of Solidification Processing, China (Grant No. SKLSP201202).

Corresponding Authors: Cao Chong-De
E-mail: caocd@nwpu.edu.cn

Cite this article:

Cao Chong-De (曹崇德), Gong Su-Lian (弓素莲), Guo Jin-Bo (郭晋波), Song Rui-Bo (宋瑞波), Sun Zhan-Bo (孙占波), Yang Sen (杨森), Wang Wei-Min (王伟民 ) Amorphous-crystalline dual-layer structures resulting from metastable liquid phase separation in (Fe₅₀Co₂₅B₁₅Si₁₀)₈₀Cu₂₀ melt-spun ribbons 2012 Chin. Phys. B 21 086102

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Amorphous-crystalline dual-layer structures resulting from metastable liquid phase separation in (Fe50Co25B15Si10)80Cu20 melt-spun ribbons

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Amorphous-crystalline dual-layer structures resulting from metastable liquid phase separation in (Fe₅₀Co₂₅B₁₅Si₁₀)₈₀Cu₂₀ melt-spun ribbons