Combustion Synthesis, Character and Electromagnetic Properties of Nano-Sized La0.8Sr0.2FeO3 Perovskite
来源期刊：JOURNAL OF RARE EARTHS2007年增刊第1期
论文作者：Li Ji Sun Jie Tan Yong
Key words：La0.8Sr0.2FeO3 nanocrystalline; sol-gel auto-combustion; microwave electromagnetic property; rare earths;
Abstract: The perovskite-type nanocrystal La0.8Sr0.2FeO3 was prepared using a sol-gel auto-combustion method with citric acid as the chelating agent. The metal ions coordination compound, obtained from nitrate and citrate, underwent an autocombustion process and voluminous ashes formed when calcining the complex in the air. Some analytical methods, which consisted of FT-IR, XRD, TEM and wave-guide, were used to characterize the gel and the final products. It was shown that metal ions and carboxyl were combined to form a homogeneous organic complex base salts in the process of gelation. The nanocrystalline had dielectric loss in the microwave frequency range of measurement.
Li Ji1，Sun Jie1，Tan Yong1
(1.School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110168, China)
Abstract:The perovskite-type nanocrystal La0.8Sr0.2FeO3 was prepared using a sol-gel auto-combustion method with citric acid as the chelating agent. The metal ions coordination compound, obtained from nitrate and citrate, underwent an autocombustion process and voluminous ashes formed when calcining the complex in the air. Some analytical methods, which consisted of FT-IR, XRD, TEM and wave-guide, were used to characterize the gel and the final products. It was shown that metal ions and carboxyl were combined to form a homogeneous organic complex base salts in the process of gelation. The nanocrystalline had dielectric loss in the microwave frequency range of measurement.
Key words:La0.8Sr0.2FeO3 nanocrystalline; sol-gel auto-combustion; microwave electromagnetic property; rare earths;
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