- A Magnetic Hysteresis Curve Tracer for Rare Earth
- A Magnetic Hysteresis Curve Tracer for Rare Earth
- ㆍ 저자명
- Rhee. J.R.
- ㆍ 간행물명
- Journal of magnetics
- ㆍ 권/호정보
- 1996년|1권 2호|pp.94-100 (7 pages)
- ㆍ 발행정보
- 한국자기학회
- ㆍ 파일정보
- 정기간행물|ENG| PDF텍스트
- ㆍ 주제분야
- 기타
A hysteresis loop tracer using a pulsed high magnetic field of 113.4 kOe, which is suitable for rare earth based permanent magnets, is constructed. The high pulsed magnetic field is generated by discharging a large capacitance charge (5 mF) with a voltage of 600 V into an air solenoid with the inner diameter of 14 mm, outer diameter of 36 mm and the lingth of 34 mm. A computer simulation method is used for the construction of an electromagnet to optimize the many parameters such as the discharge current, generated pulsed magnetic field intensity, thermal dissipation, capacitance, charged voltage, period of damping oscillation and solenoid geometry. By using the hysteresis loop tracer constructed in this work, we are able to measure hystersis loops of several rare earth based permanent magnets with large values of the remanent magnetization, coercvity and energy product.