Magnetic and microwave properties of glass-coated amorphous ferromagnetic microwires

来源期刊：中国有色金属学报(英文版)2007年第6期

论文作者：邸永江 江建军 杜刚 田斌 别少伟 何华辉

文章页码：1352 - 1357

Key words：glass-coated amorphous microwires; magnetic property; magnetic microwires-dielectric composite; natural ferro- magnetic resonance; electric dipole resonance

Abstract: Glass-coated amorphous FeCuNbSiB microwires were prepared by Taylor-Ulitovsky technique. X-ray diffractometry and scanning electron microscopy were used to investigate the microstructure and morphology of the glass-coated microwires respectively. The vibrating sample magnetometer and vector network analyzer were used to study the magnetostatic and microwave properties of glass-coated microwires. The experimental results show that the effective anisotropy of an array of 150 microwires of 10 mm in length is large than that of one microwire of 10 mm in diameter and an array of 150 microwires of 1 mm in diameter. The natural ferromagnetic resonance takes place as the microwave magnetic component is perpendicular to the microwires axis, and the electric dipole resonance takes place as the microwire is long or the short microwire concentration is moderate. The natural ferromagnetic resonance shifts to higher frequency with the larger microwire concentration. The electric dipole resonance is governed by the microwires length and concentration. The glass-coated FeCuNbSiB microwires can be used to design EMI filters and microwave absorbing materials.

基金信息：the New Century Excellent Talents in University, China
the National Natural Science Foundation of China