Residual Loss and Imaginary Permeability of MnZn Ferrite

摘要：

A low-loss MnZn ferrite, operated in the frequency range from 1 to 3 MHz between 25-120℃, has been prepared by a solid-state reaction method. The core losses (PL) were divided into hysteresis loss (Ph), eddy current loss (Pe) and residual loss (Pr). The temperature characteristics of residual loss contribution and imaginary permability were discussed. As the temperature increased, the imaginary permeability of MnZn ferrite at MHz was significantly enhanced and the resonance frequency (fir) decreased. The increase in residual loss (Pr) with rising temperature should be attributed to the decreasingfr, viz. it was due to the resonance in the domain wall, which was caused by high speed rotation of spin inside the domain.

关键词： MnZn ferrite losses residual loss imaginary permeability

作者: K.Sun Z.W.Lan Z.Yu L.Z.Li

作者单位: State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,Sichuan,China

会议类型: 国际会议

会议名称: The 10th International Conference on Ferrites(2008中国国际铁氧体研讨会)

会议地点: 成都

会议语种:英文

页码: 234-236

在线出版日期: 2008-10-10（万方平台首次上网日期，不代表论文的发表时间）