Study of Stress-Annealing Enhancement of Magnetoimpedance Effect in Fe 89.8Ni 1.5Si 5.2B 3C 0.5 Metallic Glass Ribbons
A. Kalezić-Glišović, N. Mitrović, A. Maričić, S. Djukić and R. Simeunović
Joint Laboratory for Advanced Materials of SASA, Section for Amorphous Materials, Technical Faculty Čačak, Svetog Save 65, 32 000 Čačak, Serbia
Full Text PDF
Received: 9 07 2007;
In this study, the magnetoimpedance effect in magnetically soft Fe 89.8Ni 1.5Si 5.2B 3C 0.5 metallic glass ribbon samples with significant decrease in atomic percentage of metalloids content (less than 10 at.%) was investigated. Thermal treatments were performed by stress-annealing technique of up to 693 K/475 MPa/30 min. The critical frequency of about 600 kHz was observed as the point with the initial increase in magnetoimpedance ratio. Significant improvement of magnetoimpedance-response reaching the value ΔZ/Z=25% after stress-annealing at 693 K/130 MPa/30 min was recorded in samples with still amorphous structure at driving frequency of 4 MHz. The highest magnetoimpedance-element sensitivity was found for low magnetic field intensity (H ≤ 1 kA/m), where values of about 12%/kA/m were attained.
DOI: 10.12693/APhysPolA.113.103
PACS numbers: 75.50. Kj, 75.60.Ch