Use of the Retarded Solution-Reprecipitation Process to Attain a Higher Initial Permeability in MnZn Ferrites |
| |
| Authors: | Miha Drofenik rej &#;nidar&#;i&#; Darko Makovec |
| |
| Affiliation: | Faculty for Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia;ISKRA-Feriti, d.o.o., Stegne 29, 1000 Ljubljana, Slovenia;Jo?ef Stefan Institute, Jamova 39, 1111 Ljubljana, Slovenia |
| |
| Abstract: | We investigated the effect of various amounts of liquid phase on microstructure development during sintering and the resulting magnetic permeability of MnZn ferrite (MZF) samples. Our results revealed that the microstructure and the final magnetic permeability depend on the thickness of the liquid-phase film during sintering. The solution-reprecipitation (S-R) process, which is associated with an intensive microstructure development in MZF, starts when a continuous liquid-phase film of critical thickness δo, which wets the MZF grains, is formed. The solid-state sintering that takes place before the formation of the continuous liquid-phase film is essential for the final microstructure of MZF. |
| |
| Keywords: | permeablity ferrites manganese/manganese compounds |
|
|
