The results indicated that too high calcination temperature,too long time and too high oxygen and zinc content,all of these are not favorable for improving the magnetic properties.

• 结果表明，铁氧体中锌含量太高或太低以及焙烧温度太高、焙烧时间太长、焙烧气氛中的氧浓度太高等都不利于粉末磁性能的提高。