About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Structural and Magnetic Properties of Rare-earth Lanthanum-doped Cobalt Ferrites |
Author(s) |
Xijun Zhang, Guoqian Wang, Xin Peng, Sujun Lu, Dalin Chen, Yutian Ma, Ailiang Chen |
On-Site Speaker (Planned) |
Guoqian Wang |
Abstract Scope |
Cobalt ferrite(CoFe2O4) nanoparticles exhibit high magnetocrystalline anisotropy, high coercivity, medium saturation magnetization. It shows great potential in various fields.So it is a active research topic to synthesize CoFe2O4 with controllable size, different shapes and magnetic properties.In this study, CoFe2-xLaxO4 are synthesized by cobalt ferrite and rare earth La3+ with the route of sol gel auto combustionsol. The results show that rare earth La3+ doping can refine the crystalline grain and change the magnetic properties of CoFe2O4. When the content of La3+ doping is less than 10%,it can refine the grain and make the grain size tends to homogeneous. Otherwise, it will appear heterogeneous phase La(FeO3).The excessive doping even makes most of the crystal shape is destroyed and tends to disappear. When the content of La3+ doping is not less than 15%, the coercivity of CoFe2-xLaxO4 increased and saturation magnetization decreased.This is expected to control the magnetism of cobalt ferrite by doping rare earth ions. |
Proceedings Inclusion? |
Planned: |