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- Title
Investigation of Synthesis and Magnetic Properties of Rod-Shaped CoFe<sub>2</sub>O<sub>4</sub> via Precipitation-Topotactic Reaction Employing α-FeOOH and γ-FeOOH As Templates.
- Authors
Cao, Xiaohui; Dong, Hongfei; Tan, Yuzhuo; Meng, Jinhong
- Abstract
Rod-shaped CoFe2O4 was prepared by chemical precipitation-topotactic reaction method, and in this preparation needle-like γ-FeOOH and α-FeOOH were synthesized to use as template materials. The evolution of phase and morphology in the process of calcination exhibits that α-FeOOH and γ-FeOOH experienced different routes to form the α-Fe2O3 middle phase with different crystallinity and morphology. The synthesis process of CoFe2O4 revealed that the crystallinity, purity and morphology of CoFe2O4 depend on the α-Fe2O3 middle phase. The magnetic measurement showed that the CoFe2O4 prepared from α-FeOOH has higher saturation magnetization and coercivity, and the crystallinity and morphology may play important roles in achieving a better magnetic performance.
- Subjects
MAGNETIC properties; TOPOCHEMICAL reactions; CHEMICAL synthesis; CALCINATION (Heat treatment); CRYSTALLINITY
- Publication
Journal of Electronic Materials, 2018, Vol 47, Issue 5, p2920
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-018-6165-1