Abstract
We investigated the variation of giant magneto-impedance ratio and effective anisotropy field in Co66Fe4NiB14Si15 amorphous ribbon annealed by pulsed Nd : YAG laser at various annealing energies between 65-230 mJ/pulse in air. The pulsed Nd : YAG laser was pumped with Kr-lamp and consisted of an Nd : YAG rod of Ø 5 mm × 70 mm (AR-coated plane/plane), a full mirror and output coupler (30% transmission). The lasing wavelength is 1.064 μm and the pulsewidth is 220 μs. The GMI ratio shows the largest value at 136 mJ/pulse (peak power is ~ 620 W). While the GMI ratio is decreased for the further increment of annealing energy, the decreasing GMI ratio for the further increment of annealing energy is associated with the microstructural change by laser annealing.
Original language | English |
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Pages (from-to) | 484-487 |
Number of pages | 4 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 215-216 |
DOIs | |
State | Published - 2000 |
Event | 14th International Symposium on Soft Magnetic Materials (SMM14) - Balatonfured, Hungary Duration: 8 Sep 1999 → 10 Sep 1999 |
Keywords
- Amorphous
- GMI
- Laser annealing