采用Taylor-Ulitovsky方法制备了Fe基和Co基非晶态玻璃包覆微丝,测试并分析了玻璃包覆微丝的微结构、微观形貌、静磁性能及其微波复磁导率和复介电常数。研究结果表明,通过改变拉丝速度,可以制备出直径6.3~23.5μm的非晶态玻璃包覆微丝;制备时通过水冷或气氛保护可以控制样品的物相组成。典型样品的各项异性等效场高达7.96μ10^3A/m。Fe基样品磁导率在6.3GHz具有自然共振峰,Co基样品在所测频率范围没有共振峰,此测量结果和根据理论计算的自然铁磁共振频率基本一致。典型样品的相对微波复介电常数均低于25且随频率升高而降低。
Glass-coated Fe-rich and Co-rich microwires were synthesized by the Tayor-Ulitovsky method. The microstructure, morphology, magnetic parameters, complex permeability and complex permittivity on 2 18GHz of microwire samples was measured. The results showed that the diameters of microwires could be Controlled by the draw-bench speed. The crystal structures of microwires were controlled by water-cooling or by experimental atmospheres. The effective anisotropy field of some microwires was about 7. 96 × 10^3 A/m, The natural ferromagnetic resonance was observed in 6~7GHz in Fe-rich microwire samples, but was not observed Co-rich microwire samples. This result of resonance frequency is in agreement with the value calculated by Kittel model. The complex permittivity of both Fe-rich and Co-rich microwires were less than 25 and lowering with increasing of frequency.