魏浩山,钟威,黄中鑫,崔接武,张勇,吴玉程

• 1:合肥工业大学材料科学与工程学院
• 2:先进功能材料与器件安徽省重点实验室
• 3:合肥工业大学分析测试中心

摘要(Abstract)：

利用溶胶凝胶法，在1400℃的煅烧温度下烧结制备了Nd~(3+)离子取代Ba~(2+)离子的M型钡铁氧体Ba_(1-x)Nd_xFe_(12)O_(19)(x=0、0.1、0.2和0.3),研究了取代量对M型钡铁氧体物相结构、微观结构、电磁参数以及微波吸收性能的影响。结果表明：当取代量小于0.3时，随着取代量的增加，所制备的样品均是以M型钡铁氧体为主相，形貌上以破碎的片状结构为主，颗粒尺寸会有所减小，从3～30μm减小到1～10μm; Nd~(3+)离子的取代在M型钡铁氧体体系中引入了Fe~(3+)/Fe~(2+)、Nd~(3+)/V?等多种偶极子，有效地改善了M型钡铁氧体的介电损耗性能；当取代量为0.2时，样品获得了最为优异的微波吸收性能，在匹配厚度为1.62 mm时位于13.76 GHz频率处获得最小反射损耗为-22.74 dB,同时当匹配厚度为1.48 mm时，具有4.72 GHz的有效吸波带宽。

关键词(KeyWords)： 稀土元素;离子取代;溶胶-凝胶;M型钡铁氧体;微波吸收

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2022YFB3504804)

作者(Author): 魏浩山,钟威,黄中鑫,崔接武,张勇,吴玉程

DOI: 10.13289/j.issn.1009-6264.2025-0038

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