| La1-xSmxFeO3纳米粉体的制备及气敏性能研究 |
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| 引用本文： | 张茹,赵玛,韩周祥,胡季帆. La1-xSmxFeO3纳米粉体的制备及气敏性能研究[J]. 电子元件与材料, 2011, 30(1): 25-29 |
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| 作者姓名： | 张茹 赵玛 韩周祥 胡季帆 |
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| 作者单位： | 张茹,赵玛,韩周祥,ZHANG Ru,ZHAO Ma,HAN Zhouxiang(郑州轻工业学院,河南省表界面科学重点实验室,河南,郑州,450002);胡季帆,HU Jifan(山东大学,物理学院,山东,济南,250100) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用sol-gel法制备了La1-xSmxFeO3(x=0,0.1,0.2,0.3,0.5和0.7)系列纳米粉体,并对其微结构、电性能和酒敏性能进行了测试研究.结果表明:所有粉体为斜方钙钛矿结构,粉体的晶胞体积和晶粒尺寸均随Sm含量的增大而减小.除La0.2Sm0.7FeO3外,各元件的电阻随Sm含量的增加而增大.另外...
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| 关 键 词： | 钙钛矿 纳米粉体 电性能 气敏性能 |
Study on preparation and gas sensing properties of La1-xSmxFeO3 nanopowders |
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| ZHANG Ru,ZHAO Ma,HAN Zhouxiang,HU Jifan. Study on preparation and gas sensing properties of La1-xSmxFeO3 nanopowders[J]. Electronic Components & Materials, 2011, 30(1): 25-29 |
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| Authors: | ZHANG Ru ZHAO Ma HAN Zhouxiang HU Jifan |
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| Affiliation: | 1.Henan Provincial Key Lab of Surface & Interface Science,Zhengzhou University of Light Industry,Zhengzhou 450002,China;2.School of Physics,Shandong University,Jinan 250100,China) |
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| Abstract: | A series of nanopowders for La1-xSmxFeO3(x = 0,0.1,0.2,0.3,0.5 and 0.7) were prepared by a sol-gel method.Their microstructure,electrical and ethanol-sensing properties were tested and investigated.The results show that obtained powders are an orthogonal perovskite structure.Their cell volume and grain size decrease with increase of Sm content x.However,the resistance of each gas sensor increases with the increase of x,except for La0.3Sm0.7FeO3.In addition,when x ≥ 0.3,the activation energies of the gas sensors are much larger than those of x ≤ 0.2.In all the gas sensors,La0.8Sm0.2FeO3 gas sensor shows higher sensitivity and better selectivity to ethanol gas. |
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| Keywords: | perovskite nanopowder electrical property gas sensing property |
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