| 掺杂稀土元素镧的锶铁氧体超微粉末的微波吸收特性研究 |
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| 引用本文： | 张伟,云月厚.掺杂稀土元素镧的锶铁氧体超微粉末的微波吸收特性研究[J].内蒙古大学学报(自然科学版),2006,37(6):664-666. |
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| 作者姓名： | 张伟 云月厚 |
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| 作者单位： | 内蒙古大学,呼和浩特,010021 |
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| 摘 要： | 采用溶胶-凝胶法制备了掺杂稀土元素镧的锶铁氧体超微粉末,就镧元素的掺杂含量对锶铁氧体吸波性能的影响进行了对比研究.结果表明,用聚乙二醇凝胶法制备的掺杂镧的锶铁氧体S rL axF e12-xO19超微粉末,当掺杂镧含量x=0.03时,对微波吸收效果最佳.在7.5~11.9GH z测试频段内,当涂层厚度2.0 mm时,其吸收量均在17 dB以上,在11.4 GH z处,最大吸收量为33 dB.
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| 关 键 词： | 溶胶-凝胶法 稀土 锶铁氧体 超微粉末 微波吸收特性 |
| 文章编号： | 1000-1638(2006)06-0664-03 |
| 收稿时间： | 2006-06-09 |
| 修稿时间： | 2006年6月9日 |
Study on Microwave-Absorption Properties of Lithium Ferrite Doped Rare Earth La Super Powders |
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| ZHANG Wei,YUN Yue-hou.Study on Microwave-Absorption Properties of Lithium Ferrite Doped Rare Earth La Super Powders[J].Acta Scientiarum Naturalium Universitatis Neimongol,2006,37(6):664-666. |
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| Authors: | ZHANG Wei YUN Yue-hou |
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| Institution: | Inner Mongolia University , Hohhot 010021 ,China |
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| Abstract: | Super powders of SrFe_(12)O_(19) doped La are prepared by the sol-gel technique method.The microwave absorption properties of SrLa_xFe_(12-x)O_(19)with various La in the ferrite have been studied.The results show that the super powder of SrLa_xFe_(12-x)O_(19), prepared by PEG sol-gel method,has the best microwave absorption properties when the amount of La is 3at%.The absorption quantity of SrLa_(0.03)Fe_(12-0.03)O_(19)is over 17 dB in the frequency range of(7.5)~11.9 GHz and at the coat thickness 2.0 mm.The maximum absorption peak reaches 33 dB. |
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| Keywords: | sol-gel method rare earth strontium ferrite super powder microwave-absorption properties |
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