Relationship between Power Loss and Magnetization Process in Ni-Zn Ferrites

Autor:	Seiichi Yamada, Koichi Kondo, Tatsuya Chiba, Etsuo Otsuki
Rok vydání:	2000
Předmět:	Magnetization Power loss Materials science Condensed matter physics Mechanical Engineering Loss factor Materials Chemistry Metals and Alloys Ferrite (magnet) Frequency dependence Industrial and Manufacturing Engineering Dynamic motion
Zdroj:	Journal of the Japan Society of Powder and Powder Metallurgy. 47:185-188
ISSN:	1880-9014 0532-8799
DOI:	10.2497/jjspm.47.185
Popis:	The power loss (Pcv) in Ni-Zn ferrite was analyzed by combining two methods. That is, Pcv was divided into hysteresis loss (Ph) and residual loss (Pr) from the frequency dependence of the power loss according to the method of Otsuki et al., as a first approach, and also the loss factors attributed to domain wall motion (Pw) and the rotation magnetization (Prot) by adapting the method proposed by Visser et al. as the other one. The hysteresis loss dominates Pcv in the frequency range below 500kHz, while Pr becomes predominant factor in the higher frequency range more than 500kHz. On the other hand, Pw dominates Pcv in the measured frequency range. It was found, by comparing the loss factors obtained by the analyzing methods, that Pr is mainly attributed to the domain wall motion in the lower frequency range and to the both magnetization processes in the megahertz range. It was also found that Pw consists of Ph and another loss factor which can be attributed to the dynamic motion of the domain wall.
Databáze:	OpenAIRE
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