Giant Magnetoresistance and Microstructure of Melt-Spun Cu<suB>70</suB>Co<suB>30</suB> Ribbons

Chin. Phys. Lett.

1997, Vol. 14

Issue (2): 148-150 DOI:

Original Articles

Giant Magnetoresistance and Microstructure of Melt-Spun Cu₇₀Co₃₀ Ribbons

SONG Xiao-ping¹;S. W. Mahon;R. F. Cochrane;B. J. Hickey;M. A. Howson

School of Materials and Department of Physics, University of Leeds, Leeds LS2 9JT, UK ¹On leave from School of Materials, Xian Jiaotong University, Xian 710049

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SONG Xiao-ping, S. W. Mahon, R. F. Cochrane et al 1997 Chin. Phys. Lett. 14 148-150

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Abstract This paper reports an investigation on the giant magnetoresistance and microstructure evolution in melt-spun Cu₇₀Co₃₀alloy. The results show that the phase separation is inevitable in the course of quenching, leading to the formation of two types of fcc magnetic Co-rich particles but these do not appear to contribute to the magnetoresistance (MR). On annealing, a very fine distribution of Co-rich precipitates forms at temperatures above 573 K which are responsible for the high MR developed in this material.

Keywords: 81.40.Rs 81.30.Mh

Published: 01 February 1997

PACS:	81.40.Rs	(Electrical and magnetic properties related to treatment conditions)
	81.30.Mh	(Solid-phase precipitation)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1997/V14/I2/0148

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