Synthesis of LaFeO3 Nano-Powders by Self-propagating Combustion Method of Sol-Gel
Nanocrystalline LaFeO3 with particle size of about 50 nm was directly synthesized by sol-gel auto-combustion method at room temperature.The overall process involves three steps:formation of homogeneous sol; formation of dried gel; and combustion of the dried gel.Single phase nanocrystalline LaFeO3 powders were successfully synthesized by the sol-gel self-propagation combustion method using glycin (C2HsNO2) as the chelating agent.Discuss the synthesis products by DTA/TG,XRD and SEM.The experiment results show that the LaFeO3 nano-powder was got from dried gel of G/M=1∶1 at 300℃ ignition temperature and then holding 2h at 800℃.The LaFeO3 nano-powder is about 50nm with excellent dispersibility.The hysteretic loop shows LaFeO3 nanopowders have the character of ferromagnetism,the coercivity of the nanocrystalline LaFeO3 is 99G,while the saturation is only 2.8 emug-1.
sol-gel auto-combustion LaFeO3 nano-powder
Yanfeng Zhu Weiliang Liu Anhua Wu Zhenqian Feng Chuanyong Wang Jun Xu
Jingdezhen Ceramic Institute,Jingdezhen,333001,P.R.China;Shanghai Institute of Ceramics,Chinese Acad Jingdezhen Ceramic Institute,Jingdezhen,333001,P.R.China Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,201899 P.R.China
国际会议
景德镇
英文
17-20
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）