Effect of annealing on high-frequency magnetoimpedance in Co/sub 83.2/Mn/sub 7.6/Si/sub 5.9/B/sub 3.3/ glass-coated microwires

High-frequency (45 MHz-6 GHz) magnetoimpedance response in amorphous Co/sub 83.2/Mn/sub 7.6/Si/sub 5.9/B/sub 3.3/ glass-coated microwires has been studied using conventional furnace annealing and Joule heating. Conventional annealing deteriorates, while Joule heating enhances the magnetoimpedance response.