【摘要】 采用化学共沉淀法,在80℃水浴以及900℃氩气氛围中煅烧3 h获得锰锌铁氧体.当煅烧时间延长至6 h,锰锌铁氧体因缺氧而产生氧化亚铁.铁氧体的磁性能随Al3+的掺杂量以及锰锌比例而变化,当Al3+的掺杂量为0.1,锰锌物质的量比为0.65∶0.25时,样品的Ms=59.8 Am2·kg-1,Hc=0.32 k A·m-1,Mr=0.13 Am2·kg-1,具有较好的软磁性能.更多还原

【Abstract】 Manganese zinc ferrite powder was synthesized by co-precipitaion. The pure ferrite samples were obtained in 80 ℃ water-bath,and then calcined at 900 ℃ for 3 hours under Ar. Ferrous oxide would appear if the calcination time prolonged to 6 hours. The magnetic properties of samples were various with Al3 +content and Mn / Zn ratios. Among all the samples we prepared,Mn0. 65Zn0. 25Al0. 1Fe₂O₄ displayed good magnetic properties,that was Ms= 59. 8 Am2·kg-1,Hc=0. 32 k A·m-1,Mr= 0. 13 Am2·kg-1.更多还原