钡铁氧体是常用的铁氧体材料之一, 具有饱和磁化强度高、矫顽磁力大和电阻率高等特点, 微波吸收方面有很强的应用价值。对其稀土掺杂改性是研究的热点方向。采用共沉积法制备了稀土镧掺杂的M型磁铅石钡铁氧体纳米颗粒, 采用XRD、VSM等分析手段测试稀土掺杂钡铁氧体的结构和磁性能, 并采用矢量网络分析仪研究了纯态和稀土掺杂钡铁氧体的吸波性能, 结果显示, 稀土掺杂钡铁氧体的吸波性能进一步提高。

Barium-Ferrite is one of the common used Ferrite material for it’s high saturation magnetization, coercivity and resistivity, which has a widely application in microwave absorption. Tombarthite-substituted modification of the Barium-Ferrite is the main research direction. M hexa-Barium-Ferrite nano-particles are synthesized by co-precipitation method. The structure and electromagnetic properties of the results is analyzed by X-ray powder diffraction (XRD) and vibrating sample magnetometer (VSM). The vector network analyzer is used to analyze the absorbing properties of the pure and tombarthite-substituted Barium-Ferrite. The results show that the absorbing property of tombarthite-substituted Barium-Ferrite is improved further.