Title :
Magnetic Properties and GMI Effect of Ductile Amorphous Microwires
Author :
Zhukova, Valentina ; Umnov, P. ; Molokanov, V. ; Shalygin, Aleksandr N. ; Talaat, Ahmed ; Zhukov, Arcady
Author_Institution :
Dipt. Fis. de Mater., UPV/EHU, San Sebastian, Spain
Abstract :
We report on studies of the effect of annealing on magnetic properties and giant magneto-impedance (GMI) effect in Co69Fe4Cr4Si12B11 amorphous microwires with diameters of 90 and 55 μm produced by the Tailor-Ulitovski method allowing rapid quenching of composite glass coated microwires followed by glass removal techniques and warm drawing. Drawn samples have been annealed at temperatures between 250°C and 450°C. We studied GMI effect and hysteretic magnetic properties in produced microwires. Annealing considerable affects hysteresis loops and GMI effect of studied microwires. Optimization of GMI effect has been observed for samples annealed at 400°C.
Keywords :
amorphous magnetic materials; annealing; boron alloys; chromium alloys; cobalt alloys; drawing (mechanical); giant magnetoresistance; iron alloys; magnetic hysteresis; silicon alloys; Co69Fe4Si12B11; GMI effect; Tailor-Ulitovski method; annealing; ductile amorphous microwire; giant magnetoimpedance; glass removal technique; hysteretic magnetic property; rapid quenching; size 55 mum; size 90 mum; temperature 250 degC to 450 degC; warm drawing; Amorphous magnetic materials; Annealing; Magnetic hysteresis; Magnetosphere; Perpendicular magnetic anisotropy; Soft magnetic materials; Giant magneto-impedance (GMI) effect; magnetic anisotropy; thin microwires;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2198204
