Investigation of Synthesis and Magnetic Properties of Rod-Shaped CoFe2O4 via Precipitation-Topotactic Reaction Employing α-FeOOH and γ-FeOOH As Templates

被引：7

作者：

Cao, Xiaohui ^{[1
]}

Dong, Hongfei ^{[1
]}

Tan, Yuzhuo ^{[1
]}

Meng, Jinhong ^{[1
,2
]}

机构：

[1] Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Liaoning, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2018年 / 47卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Rod-shaped CoFe2O4; chemical precipitation-topotactic reaction; calcination; crystallinity; magnetic properties; TOPTACTIC REACTION; HIGH-COERCIVITY; FERRITE; PARTICLES; NANOCRYSTALS; NANORODS;

D O I：

10.1007/s11664-018-6165-1

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Rod-shaped CoFe2O4 was prepared by chemical precipitation-topotactic reaction method, and in this preparation needle-like gamma-FeOOH and alpha-FeOOH were synthesized to use as template materials. The evolution of phase and morphology in the process of calcination exhibits that alpha-FeOOH and gamma-FeOOH experienced different routes to form the alpha-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 alpha-Fe2O3 middle phase. The magnetic measurement showed that the CoFe2O4 prepared from alpha-FeOOH has higher saturation magnetization and coercivity, and the crystallinity and morphology may play important roles in achieving a better magnetic performance.

引用

页码：2920 / 2928

页数：9

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