서지주요정보
3%SiFe 에서 자구 동역학에 의한 MAE와 BN발생 = Magneto-acoustic emission and barkhausen noise by magnetic domain dynamics in 3%SiFe
서명 / 저자 3%SiFe 에서 자구 동역학에 의한 MAE와 BN발생 = Magneto-acoustic emission and barkhausen noise by magnetic domain dynamics in 3%SiFe / 김철기.
저자명 김철기 ; Kim, Cheol-Gi
발행사항 [서울 : 한국과학기술원, 1989].
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소장정보

등록번호

4105384

소장위치/청구기호

학술문화관(문화관) 보존서고

DAP 8902

SMS전송

도서상태

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초록정보

The observation of magnetic domain using the magnetic Kerr effect shows the 180˚ and zig-zag domains in (110) [001] 3% SiFe due to the H-field below and above Φ$\simeq$30˚ respectively, which is the angle between the H-field and [001] direction. The magneto-acoustic emission (MAE) signal at Φ = 0˚ splits into two peaks at the coercive force during half a cycle of B-H hysteresis loop. The new peak appears between the original two peaks from Φ = 30˚, which splits into two peaks from Φ = 60˚. The MAE energy and the B-H hysteresis loss increase with Φ at 0˚≤ Φ ≤ 90˚. The MAE energy increases as the magnetizing frequency increases, however, the rate decreases above the frequency where the skin depth effect becomes apparent. The MAE energy increases with tensile stresses up to $11.2×10^6 Nm^{-2}$, followed by a decrement with further stress. The envelope of Barkhausen noise (BN) during half a cycle of B-H loop shows two peaks like the MAE at Φ = 0˚ and the new peaks between and outside them at Φ ≥ 30˚. The BN energy drops sharply at Φ = 30˚ and then becomes constant.

서지기타정보

서지기타정보
청구기호 {DAP 8902
형태사항 viii, 107 p. : 삽도, 사진 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Cheol-Gi Kim
지도교수의 한글표기 : 김호철
지도교수의 영문표기 : Ho-Chul Kim
학위논문 학위논문(박사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 103-107
주제 Domain structure.
Kerr effect.
Barkhausen 효과. --과학기술용어시소러스
자기 음향 효과. --과학기술용어시소러스
자역 구조. --과학기술용어시소러스
Kerr 효과. --과학기술용어시소러스
Barkhausen effect.
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