The Effect of Sintering Process on the Electromagnetic Properties of Mn-Zn Ferrites

Abstract

Abstract-~he effects .of si~tering temperature and oxygen partial pressure on the electromagnetic properties of Mn-Zn ferntes were mvestlgated. The grain size increased with increasing sintering temperature. The power loss at 100kHz. dec~eased,. while the power loss at 500kHz increased as the grain size increased with sintering temperaty.re. Smtenng WIth low oxygen partial pressure at 1150°C resulted ih high density and initial penneabl!lty, and. decre~se? the power loss at 100kHz and 500kHz. The oxygen partial pressure lower than 10-2 atm. dunng heatmg, slgmflcantly suppressed the hysteresis loss. However, the oxygen activity did not affect the grain size of the sintered cores.