Microwire Magneto-Resonance Characteristics in a Magnetic LC-Resonator Device

다국어 초록 (Multilingual Abstract)

In the present work, the magneto-resonance characteristics in a LC-resonator device built on amorphous glass-coated Co-based ferromagnetic microwires have been investigated. The giant magnetoimpedance (GMI) measurements were conducted in the high-frequency range of 100 { 800 MHz and for a dc magnetic field varying within 120 Oe. The variation in the diameter of the microwire had significant effects on the magnitude of the GMI effect, the characteristic resonance frequencies and the positions of the resonant peaks. The resonance in a LC-resonator device occurs at a specific intensity of the applied dc magnetic field. Noticeably, the largest field sensitivity of the GMI reaches extremely high values of 20,000 %/Oe and 18,000 %/Oe at resonance frequencies of 518.21 MHz and 146.25 MHz for LC-resonators constructed using Co83.2B3.3Si5.9Mn7.6 and Co67Fe3.8Ni1.4B11.5Si14.6Mo1.7 microwires, respectively. These results are of great interest for developing a new class of ultra-sensitives, high-frequency GMI-based magnetic sensors.

참고문헌 (Reference)

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