Microstructural evolution and giant magnetoresistance in melt-spun Cu70Co30 ribbon

作者：Song X^*; Mahon SW; Cochrane RF; Howson MA

来源：Journal of Alloys and Compounds, 1996, 245: 75-79.

DOI：10.1016/S0925-8388(96)02414-0

• Cu-Co alloys
• giant magnetoresistance
• melt-spinning
• precipitation kinetics

A maximum giant magnetoresistance (GMR) value of 22% has been determined in melt-spun Cu70Co30 ribbon after annealing at 450 degrees C for 1 h. Two types of Go-rich precipitates were found in the as-spun ribbon, but neither of these appear to contribute to the observed GMR. On annealing, a very fine distribution of Co-rich precipitates forms at temperatures above 300 degrees C which are responsible for the high GMR developed in this material.

• 出版日期1996-11-15