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허진(Jeen Hur),신성철(Sung-Chul Shin) 한국자기학회 1998 韓國磁氣學會誌 Vol.8 No.1
We have theoretically investigated torque curve shapes of simple uniaxial magnetic materials by considering conditions for round peaks to exist. These conditions are functions of an applied field, anisotropy field, and lowest critical field h_0 for a domain wall to move or nucleate. The peak having a height of 2h appears when h is lower than h₁, the peak having a height of 1 appears when h is higher than h₂, and two peaks having heights of 1 and -1 appear when h is higher than h₃. It was found that torque curves of simple uniaxial magnetic materials could be classified into 8 distinct types depending on the existence of hysteresis, the number of the round peaks, and the reversal mechanisms. Simple uniaxial magnetic materials also found to be classifed into the 5 groups depending on h_0.
1차 비등방성 단자구 자성체의 자기행동을 기술하는 닫힌 형태의 양함수들
허진(Jeen Hur),신성철(Sung-Chul Shin) 한국자기학회 1998 韓國磁氣學會誌 Vol.8 No.2
Explicit and closed-form expressions describing magnetic behaviors of uniaxial magnetic materials are derived. Explicit and closed-form expressions for magnetic torque, magnetization orientation, and thier derivative functions with respect to the intensity and the orientation of an applied field. Those explicit expressions could give elegant methods of measuring magnetic anisotropy and saturation magnetization by the least squre fitting. In addition, one could use them to study the distribution function of magnetic propeties of a non-interacting magnetic aggregate.
허진(Jeen Hur),현석봉(Suk-Bong Hyun),박경환(Kyung-Hwan Park),박성수(Sung-Su Park) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ
본 논문에서는 사용자 모델, 전달모델, 거리에 따른 수신 전력을 기반으로 임의의 패킷 길이를 갖는 주파수 홉핑 및 DSSS 시스템들간의 간섭을 정얄적으로 분석한 결과를 보고하고자 한다.