标题：Sol-gel combustion synthesis and antiferromagnetic properties of orthorhombic perovskite-type MFeO3:R3+ (M=La, Gd; R=Eu, Er, Ho) nanocrystalline powders
作者：Hao, Peixi; Jiang, Linwen; Zhao, Hanlei; Li, Jiangtao; Qiu, Shiwen; Chen, Hongbing
作者机构：[Hao, Peixi; Jiang, Linwen; Zhao, Hanlei; Li, Jiangtao; Qiu, Shiwen; Chen, Hongbing] Ningbo Univ, Key Lab Photoelect Detect Mat & Devices Zhejiang, St 更多
通讯作者地址：[Jiang, LW]Ningbo Univ, Key Lab Photoelect Detect Mat & Devices Zhejiang, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Peoples R 更多
来源：JOURNAL OF SOLID STATE CHEMISTRY
关键词：Sol-gel; Combustion method; Ferrite; Perovskite structure; Magnetic; property
摘要：The MFeO3: R3+ (M = La, Gd; R = Eu, Er, Ho) nanocrystalline powders were successfully synthesized by the sol-gel combustion method using glycine-based gel at a low ignition temperature. The as-burnt products present honeycomb-like structure with many irregular continuous pores due to the releasing of a large amount of gas during the combustion reaction process. The lattice parameters and cell volumes of MFeO3:R3+ (M = La, Gd; R = Eu, Er, Ho) nanocrystalline powders are compared in detail. The magnetic properties of all the samples were studied systematically. The results show that the doping of rare-earth ions enhanced greatly the coercivity of GdFeO3 and LaFeO3 as a result of the enhancement of magnetic anisotropy. The influence of doped rare-earth ions on the magnetic properties was summarized. The distinction of magnetism of MFeO3:R3+ (M = La, Gd; R = Eu, Er, Ho) were explained in detail by the intrinsic magnetism of doped rare-earth ions. This work is significant for the application of rare-earth elements in other magnetic materials.