Preparation and characterization of perovskite REFeO3 nanocrystalline powders

被引：0
作者：
申慧 [1 ,2 ]
徐家跃 [1 ,2 ]
武安华 [2 ]
机构：
[1] School of Materials Science and Engineering,Shanghai Institute of Technology
[2] Shanghai Institute of Ceramics,Chinese Academy of Sciences
来源：
JournalofRareEarths | 2010年 / 28卷 / 03期
基金：
国家高技术研究发展计划(863计划);
关键词：
orthoferrite; nanocrystalline powder; sol-gel combustion; rare earths;
D O I：
暂无
中图分类号：
TB383.1 [];
学科分类号：
070205 ; 080501 ; 1406 ;
摘要：
Combustion of nitrate-citrate gel was employed to prepare REFeO3(RE=Y,La and Gd) nanocrystalline powders.The samples were characterized with X-ray diffraction(XRD) analysis,thermal analysis(TG/DTA) and transmission electron microscopy(TEM).LaFeO3 crystallites were directly obtained by the sol-gel combustion process,and orthorhombic YFeO3 and GdFeO3 were formed when annealed at 800 oC.The investigation of magnetic properties showed that YFeO3 and LaFeO3 exhibited ferromagnetic behavior,while GdFeO3 presented paramagnetic coupling.It was suggested that the Fe sublattice governed the magnetization process in YFeO3 and LaFeO3.The dominance of paramagnetic component from Gd was observed in GdFeO3.
引用
收藏
页码：416 / 419
页数：4
相关论文
共 3 条
  • [1] Synthesis and characterizations of size-controlled FeNi3 nanoplatelets
    Wang, Huazhi
    Li, Jiangong
    Kou, Xinli
    Zhang, Lei
    [J]. JOURNAL OF CRYSTAL GROWTH, 2008, 310 (12) : 3072 - 3076
  • [2] Selective self-propagating combustion synthesis of hexagonal and orthorhombic nanocrystalline yttrium iron oxide
    Wu, L
    Yu, JC
    Zhang, LZ
    Wang, XC
    Li, SK
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (10) : 3666 - 3674
  • [3] Magneto-optical current sensors of high bandwidth[J] . Y.S Didosyan,H Hauser,J Nicolics.Sensors ＆ Actuators: A. Physical . 2000 (1)
1