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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Preparation and Magnetic Properties of Zinc Ferrite Nanoparticales
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 564-566)
Author(s): Ping Hu, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
De-an Pan, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
Shen-gen Zhang, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
Jian-jun Tian, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
Abstract: ZnFe2O4 nanoparticles were prepared by the sol-gel auto-combustion method using nitrate as raw materials and citric acid as chelate additives. The results show that auto-combustion powders with the particle size of about 25 nm contain ZnO impurities uniform in both morphology and particle size. The particle sizes of annealed powder in air increase with the annealing temperature increase. Annealed powders have pure ZnFe2O4 phase when annealing temperature is higher than 650 ?C in air. Sample annealed at 1000 ?C in air has fine paramagnetism which Ms=2.569emu?g-1 and Mr=9.16×10-3emu?g-1. It was an excellent paramagnetic nano-ferrite material.
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