| 纳米复合材料NiCuZn铁氧体/SiO2的结构和磁性能 |
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| 引用本文： | 华杰,刘梅,徐仕翀,李海波. 纳米复合材料NiCuZn铁氧体/SiO2的结构和磁性能[J]. 电子元件与材料, 2008, 27(4): 23-24 |
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| 作者姓名： | 华杰 刘梅 徐仕翀 李海波 |
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| 作者单位： | 吉林师范大学,信息技术学院,吉林,四平,136000;吉林师范大学,凝聚态物理与材料科学研究所,吉林,四平,136000 |
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| 基金项目： | 吉林省杰出青年研究计划资助项目 , 吉林省科技发展计划 |
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| 摘 要： | 以正硅酸乙酯和硝酸盐为原料,采用sol-gel法制备了Ni0.25Cu0.25Zn0.5Fe2O4/SiO2纳米复合材料。利用TGA/DTA,XRD,TEM和VSM,研究了热处理过程中,干凝胶的变化及样品的结构、晶粒尺寸和磁性。结果表明:由于样品中SiO2在高温下晶化,随着热处理温度的升高,样品的比饱和磁化强度和矫顽力先增大后减小。经900℃热处理后,样品中Ni0.25Cu0.25Zn0.5Fe2O4粒径约为30nm,比饱和磁化强度Ms为50Am2·kg–1,矫顽力Hc为4.22kA·m–1。
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| 关 键 词： | 无机非金属材料 铁氧体 纳米复合材料 sol-gel法 结构 磁性能 |
| 文章编号： | 1001-2028(2008)04-0023-02 |
| 修稿时间： | 2007-11-23 |
Structure and magnetic properties of NiCuZn ferrite/SiO_2 nanocomposites |
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| HUA Jie,LIU Mei,XU Shi-chong,LI Hai-bo. Structure and magnetic properties of NiCuZn ferrite/SiO_2 nanocomposites[J]. Electronic Components & Materials, 2008, 27(4): 23-24 |
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| Authors: | HUA Jie LIU Mei XU Shi-chong LI Hai-bo |
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| Affiliation: | HUA Jie1,LIU Mei2,XU Shi-chong2,LI Hai-bo2 (1. College of Information & Technology,Jinlin Normal University,Siping 136000,Jilin Province,China,2. Institute of Condensed Matter Physics , Material Science,Jilin Normal University,China) |
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| Abstract: | Ni0.25Cu0.25Zn0.5Fe2O4/SiO2 nanocomposites were prepared by sol-gel method using tetraethylorthosilicate and nitrates as raw material. The changes of xerogel during heat treatment were studied by TGA-DTA and the structure,grain size and magnetic properties of the samples were investigated by XRD,TEM and VSM. The results show that with the increase of calcining temperature,the Hc and Ms of the nanocomposites increase at first and then decrease because of the crystallization of the silica matrix at high tempe... |
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| Keywords: | non-metallic inorganic material ferrite nanocomposites sol-gel method structure magnetic property |
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