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Detailed Program
Paper Number : EF-I05
Time Frame : 16:55~17:20
Presentation Date : Friday, 28, November
Session Name : Electric Field Assisted Sintering
Session Chair 1# : Young-Hwan Han
Session Chair 2# : Koji Morita
Spark plasma sintering temperature effects on the microstructure and magnetic properties of carbon nanotube/NiZn ferrite composites
Xiaobing Zhou
Ningbo Institute of Materials Technology and Engineering
Carbon nanotube (CNT)-Ni0.5Zn0.5Fe2O4 composites were synthesized by precipitation-hydrothermal method, and then fabricated by Spark Plasma Sintering (SPS) technique at different temperature. The microstructure and magnetic properties of carbon nanotube/NiZn ferrite composites were investigated by X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and physical properties measurement system (PPMS). The results shown that the grain size and saturation magnetization of the carbon nanotube/NiZn ferrite composites were strongly dependent on the SPS temperature. Both the grain size and saturation magnetization increased with the SPS temperature increasing. Ni nanoparticles could be formed by the carbothermal reduction between CNTs and Ni0.5Zn0.5Fe2O4, and the mass of Ni nanoparticles increased with the SPS temperature increasing.
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