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为拓宽材料在微波频段下的吸波频带,制备了W型六角晶系铁氧体和BaTiO3粉体,通过XRD、SEM对产物的晶体结构和微观形貌进行分析;采用矢量网络分析仪测试了W型六角晶系铁氧体、BaTiO3及其复合物在2~ 14GHz的电磁参数,在2.8mm下计算分析材料的吸波性能并对吸波原理进行分析.结果表明:W型六角晶系铁氧体在8~11 GHz频段内有较好的吸波性能(最小反射率为- 48 dB);BaTiO3比例为25%的W型六角晶系铁氧体/BaTiO3复合物在保持较好的吸收性能(最小反射率为-31 dB)的同时,具有较宽的吸波频宽(小于-10 dB),为7GHz(7 ~14 GHz).

参考文献

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