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Cu-Ti掺杂对钡铁氧体显微结构和电磁性能的影响
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作者单位:

中国地质大学工程技术学院,中国地质大学工程技术学院;北京邮电大学理学院,中国地质大学工程技术学院,中国地质大学工程技术学院;北京邮电大学理学院

基金项目:

国家自然科学基金资助(项目号11674035,11274052,61274015)


Structural and electromagnetic properties of Cu-Ti substituted M-type BaFe12O19 hexaferrites
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School of Engineering and Technology,China University of Geosciences,School of Engineering and Technology,China University of Geosciences;China;School of Science,Beijing University of Posts and Telecommunications;China,School of Engineering and Technology,China University of Geosciences,School of Science, Beijing University of Posts and Telecommunications

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    摘要:

    采用固相烧结法,以Fe2O3、BaCO3、CuO和TiO2为原料,在经过优化的烧结温度1200 oC下进行固相烧结,成功制备得到了Cu-Ti 共掺杂的钡铁氧体BaFe12-2xCuxTixO19 (x=0, 0.05, 0.10, 0.15和0.20),并研究了Cu-Ti添加量对钡铁氧体组成和结构的影响。实验结果表明,掺杂的Cu2+和Ti4+可以进入钡铁氧体晶格中,且在样品中没有观察到第二相;随着Cu-Ti掺杂量的增加所得钡铁氧体的矫顽力逐渐下降,从204.46 kA/m逐渐降低到86.82 kA/m;饱和磁化强度变化很小,在54.61-58.42 A?m2/kg之间微弱波动,介电常数先增大后减小,但介电损耗正切值几乎不变。

    Abstract:

    In this work, BaFe12-2xCuxTixO19 (x=0, 0.05, 0.10, 0.15 and 0.20) ferrites were fabricated at the optimum temperature of 1200 oC from BaCO3, Fe2O3, CuO and TiO2 powders by using a conventional solid-state-reaction sintering method. The co-doping effect of Cu2+-Ti4+ on the microstructure and magnetic properties of the as-prepared ferrites was investigated. It was revealed that the doped Cu2+-Ti4+ could enter into the lattice of BaFe12O19, and no second phase was observed in the doped samples. The coericivity of the prepared samples decreased from 204.46 to 86.82 kA/m with increasing doping amount of Cu2+-Ti4+ ions. The saturation magnetization fluctuated somewhat between 54.61 and 58.42 A?m2/kg with increasing content of Cu2+-Ti4+ ions. With increasing doping amount of Cu-Ti ions, the dielectric constant increases first and then decreases, but the change in dielectric loss is very weak.

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汪春满,彭志坚,王成彪,符秀丽. Cu-Ti掺杂对钡铁氧体显微结构和电磁性能的影响[J].稀有金属材料与工程,2018,47(S1):179~184.[Chunman Wang, Zhijian Peng, Chengbiao Wang, Xiuli Fu. Structural and electromagnetic properties of Cu-Ti substituted M-type BaFe12O19 hexaferrites[J]. Rare Metal Materials and Engineering,2018,47(S1):179~184.]
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  • 收稿日期:2017-06-10
  • 最后修改日期:2018-02-08
  • 录用日期:2018-02-09
  • 在线发布日期: 2018-10-22