Effect of Additions and Oxygen Partial Pressure on the Electromagnetic Properties of High Frequency MnZn Ferrites

A. Znidarsic, I. Feriti, M. Drofenik
1997 Journal de Physique IV : Proceedings  
The effect of dopant and low oxygen partial pressure during sintering on the magnetic properties of MnZn ferrites for use in high frequency power supplies was studied. A low partial pressure of oxygen in the sintering atmosphere and a proper temperature profile during sintering decrease the average grain size, while the dopant, which segregates to the outer gain region, increases the grain boundary resistivity resulting in a lowering of power loss.
doi:10.1051/jp4:1997135 fatcat:2y5lkaknwrgytk23yjp4w3hm4i