Magnetic permeability of ( Fe Co Ge ) 88 Zr 6 B 5 Cu 1 alloys: Thermal stability in a wide temperature range.

摘要

Temperature dependence, from room temperature up to 1000 K, of the initial permeability ofFe83−xCoxGe5Zr6B5Cu1 x=5 and 20 alloys at different stages of devitrification is reported. Asnanocrystallization progresses, room temperature decreases but high temperature one increases,leading to an improvement of its thermal stability extended from room temperature up to 915 K,characterized by a temperature coefficient of permeability 0.1%/K 4000 and 0.04%/K 800 for 5 and 20 at. % Co containing alloys, respectively.