【摘要】 采用高频感应加热熔融拉引法制备Fe73.0Cu3.0Nb1.5V2.0Si13.5 B9.0非晶玻璃包裹细丝,经适当温度退火处理得到纳米微晶丝。首次研究了样品在纵向驱动方式下的巨磁阻抗效应,发现T8=570℃下退火得到的样品,在驱动电流频率f=300kHz时其最大磁阻抗变化可达1020％。更多还原

【Abstract】 Amorphous Fe73.0Cu1.0Nb1.5 V2.0Si13.5B9.0 microwires were prepared by glass-coated melt-spinning technique. Nanocrystalline samples were obtained by annealing the amorphous wires at appropriate temperatures and the longitudinally driven giant magneto-impedance effect has also been investigated for the first time. The result showed that the maximal magneto-impedance value was 1020% obtained in the sample annealed at 570℃.更多还原