마이크로와이어를 이용한 고기능 자기소자 개발 = Advanced Magnetic Devices using Microwires

다국어 초록 (Multilingual Abstract)

In this study we have investigated magneto-impedance effect of a noble micro-magnetic sensor deviceusing a glass coated soft magnetic microwire to form a LC resonator. This study was performed as a R&E(Research and Education) project for science high school students. The R&E research project consistedof a series of leveled research questions. The leveled research questions were designed in terms of studentsknowledge improvement which can be acquired by performing step by step leveled research questions.Students realized the existence of inductance even in a straight wire. Large inductance has been observedespecially in amorphous material due to its large permeability. The inductance of amorphous wire wasfound to be proportional to its length and changing as a function of external magnetic field. The Giantmagneto-impedance (GMI) has been observed at near zero magnetic field with resonance frequency of178 MHz. The phenomena were also observed repeatedly at multiple of the resonance frequency. TheGMI at near the resonance frequency can be explained in terms of standing wave of magnetic moments.It may be possible to use the GMI for the development of micro-magnetic sensor device. This projectis an successful example of a SCL(Scientific Community Laboratory) instruction model for a R&Eproject to the gifted.

목차 (Table of Contents)

• Abstract
• I. 서 론
• II. 연구 방법 및 이론
• 1. 이론적 배경
• 2. 실험방법
• III. 연구결과 및 고찰
• 1. 여러 가지 시료의 인덕턴스 측정
• 2. 시료의 길이 따른 인덕턴스 측정
• 3. 시료의 두께에 따른 인덕턴스 변화
• 4. 비정질 시료의 자기임피던스 측정
• 5. Microwire의 자기임피던스 측정
• IV. 결론 및 제언
• 참고문헌