| 不同晶粒度的La0.67Sr0.33MnO3的吸波性能研究 |
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| 引用本文： | 程玉兰,魏克湘,夏平,白泉. 不同晶粒度的La0.67Sr0.33MnO3的吸波性能研究[J]. 湖南工程学院学报(自然科学版), 2011, 0(4): 32-34,49 |
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| 作者姓名： | 程玉兰 魏克湘 夏平 白泉 |
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| 作者单位： | 湖南工程学院机械工程学院,湘潭,411101 |
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| 基金项目： | 湖南省教育厅科研资助项目 |
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| 摘 要： | 用溶胶-凝胶法合成了不同晶粒度的La0.67Sr0.33MnO3样本,研究了不同晶粒度材料的结构、磁性和微波吸收性质之间的关联.实验结果表明,可以通过改变烧结温度实现La0.67Sr0.33MnO3样品晶粒大小的控制;在一定的纳米尺度范围内,随着晶粒度的不断增大,吸波峰值逐渐向高频方向移动;晶粒度为58.5nm的样品在...
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| 关 键 词： | 晶粒度 磁性 反射损耗 微波吸收 |
Microwave Absorption Properties of La0.67Sr0.33MnO3 with Different Particle-size |
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| CHENG Yu-lan,WEI Ke-xiang,XIA Ping,BAI Quan. Microwave Absorption Properties of La0.67Sr0.33MnO3 with Different Particle-size[J]. Journal of Hunan Institute of Engineering(Natural Science Edition), 2011, 0(4): 32-34,49 |
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| Authors: | CHENG Yu-lan WEI Ke-xiang XIA Ping BAI Quan |
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| Affiliation: | (College of Mechanical Engineering,Hunan Institute of Engineering,Xiangtan 411101,China) |
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| Abstract: | La0.67Sr0.33MnO3 particles with different particle size are prepared by sol-gel method.The structure,magnetization and microwave absorption properties are investigated.The results show that the particle size can be controlled by sinter temperature.The peaks of the maximum reflection loss（RL） move to higher frequency regions with increasing particle size.The value of the maximum RL is-32 dB at 10.1 GHz with a particle size of 58.5nm.The bandwidth with a RL exceeding-8dB reaches 1.6GHz in the whole measured freqency range. |
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| Keywords: | particle size magnetization reflection loss microwave absorption |
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