CAJ | 학술논문

分别用机械法和 HF 酸化学腐蚀方法去除金属芯丝直径为13μm、总直径为47μm 的钴基Co68.15Fe4.35Nb1Si11.5B15.0非晶态玻璃包覆丝的玻璃包覆层，发现 HF 酸腐蚀去除玻璃层比机械法处理过的非晶丝的巨磁阻抗磁场灵敏度要高，HF 酸剥离的非晶裸丝的巨磁阻抗最大磁场灵敏度可达ξ=105.02%/(79.6A/m)。HF酸去除玻璃包覆层的微细丝的阻抗效应要比有玻璃包覆层的丝在更低的外部磁场作用下达到巨磁阻抗比的最大值，在频率为 f=4.07MHz、磁场强度为 Hdc=176A/m 处，非晶裸丝的磁阻抗效应达到最大值113.6%，其巨磁阻抗效应的磁场灵敏度ξ=42.9%/(79.6A/m)。
분별용궤계법화 HF 산화학부식방법거제금속심사직경위13μm、총직경위47μm 적고기Co68.15Fe4.35Nb1Si11.5B15.0비정태파리포복사적파리포복층，발현 HF 산부식거제파리층비궤계법처리과적비정사적거자조항자장령민도요고，HF 산박리적비정라사적거자조항최대자장령민도가체ξ=105.02%/(79.6A/m)。HF산거제파리포복층적미세사적조항효응요비유파리포복층적사재경저적외부자장작용하체도거자조항비적최대치，재빈솔위 f=4.07MHz、자장강도위 Hdc=176A/m 처，비정라사적자조항효응체도최대치113.6%，기거자조항효응적자장령민도ξ=42.9%/(79.6A/m)。
Glass-coating layer of Co-based glass-coated amorphous microwire Co68.15Fe4.35Nb1Si11.5B15.0 with total diameter 47μm and metallic core diameter 13μm was removed by mechanical method and HF chemical corrosion, respectively. It is found that the maximum magnetic sensitivity of GMI for microwire with glass-coating layer removed by HF chemical corrosion is higher than that by mechanical mehod, and the former can reach ξ =105.02%/Oe. Maximum giant magnetoimpedance ratio can be reached at lower applied magnetic field for microwire without glass-coated layer than that with glass-coated layer. Amorphous microwire without glass layer The maxmum giant magnetoimpedance of 113.6% and magnetic sensitivity of 42.9%/Oe are obtained at frequency 4.07MHz and magnetic field Hdc=2.2Oe.