Al^（3＋）对高频大功率NiZn铁氧体性能的影响

The Influence of Al￣(3+)on the Properties of NiZn Ferrite in the Field of High-Frequence and Large-power

研究了用Ａｌ￣（３＋）代替Ｆｅ￣（３＋），对高频大功率ＮｉＺｎ铁氧体性能的影响，它有效抑制了Ｆｅ￣（２＋）的产生。使铁氧体电阻率增加，介电损耗和磁损耗下降，且有较大的摆幅磁感，是提高高频大功率ＮｉＺｎ铁氧体性能的有效方法。

In this paper,we have studied theinfluence of Al￣(3+) instead of Fe￣(3+) on the properties ofNiZn ferrite in the field of high-frequence and large-power. When using Al￣(3+) instead of Fe￣(3+),Fe￣(2+)is restrainted,the electrical resistivity of ferrite isincreased、magnetic and dielectric loss are decreased。and the flux swing becomes large.This is aneffective mathod to improve the liroperties of NiZnferrite .