서지주요정보
토크마그네토미터를 이용한 자화량 및 보자력 측정의 새로운 방법 = New measurement techniques to determine magnetization and coercivity using a torque magnetometer
서명 / 저자 토크마그네토미터를 이용한 자화량 및 보자력 측정의 새로운 방법 = New measurement techniques to determine magnetization and coercivity using a torque magnetometer / 허진.
발행사항 [대전 : 한국과학기술원, 1993].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8003554

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 93028

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

We have designed and fabricated a highly sensitive and accurate torque magnetometer for measuring the magnetic anisotropy of magnetic materials. This torque magnetometer could measure two ranges of torque-± 5dyne·cm and ± 50 dyne·cm- with a 400 ppm sensitivity of the full-scale range selected, and an accuracy of better than 1%. Typical noise levels were 0.002 dyne·cm and 0.02 dyne·cm in the measurement ranges of ± 5 dyne·cm and ± 50 dyne·cm, respectively. Because of high sensitivity and accuracy of the current system, magnetic anisotropy measurements can be done without stacking for the samples having small magnetization and/or volumes. We have developed new techniques to measure the magnetization and coercivity of a uniaxial magnetic material using a torque magnetometer. The magnetization could be measured from the linear dependence at low-field regime in a plot of the torque τ versus the applied field H, where the direction of the applied field was perpendicular to the uniaxial orientation. While, the coercivity could be obtained by taking the value of the applied field where the torque was zero, when the direction of the applied field was (180+δ) degrees from the uniaxial orientation. The techniques were applied to determine the magnetizations and coercivities of several Co/Pd multilayer thin films. The results were confirmed to be similar within a 2-percentage difference to those obtained by a vibrating sample magnetometer.

서지기타정보

서지기타정보
청구기호 {MPH 93028
형태사항 iii, 53 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jeen Hur
지도교수의 한글표기 : 신성철
지도교수의 영문표기 : Sung-Chul Shin
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 51-53
주제 Magnetization.
Magnetometer.
Anisotropy.
자기 토크계. --과학기술용어시소러스
자화 특성 측정. --과학기술용어시소러스
보자력. --과학기술용어시소러스
QR CODE qr code