Effect of heating temperature on magnetic and microstructural properties of Zn2W hexaferrites synthesized using co-precipitation technique

被引：2
作者：
Cao, Xiaohui [1 ]
Meng, Jinhong [1 ,2 ]
Fu, Lijuan [1 ]
Guo, Xiaoyu [1 ]
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 ALLOYS AND COMPOUNDS | 2019年 / 805卷
基金：
中国国家自然科学基金;
关键词：
Rod-shaped BaZn2Fe16O27; Plate-shaped BaZn2Fe16O27; Chemical precipitation; Calcination; Magnetic properties; SOL-GEL; HEXAGONAL FERRITES; GAMMA-FEOOH; NANOPARTICLES; DEHYDROXYLATION; PARTICLES; BEHAVIOR;
D O I：
10.1016/j.jallcom.2019.07.049
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27 were prepared by chemical precipitation method, and XRD, SEM, FT-IR and VSM techniques were used to investigate their synthesis processes, magnetic properties. The experimental results show that the formation processes of plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27 follow similar routes and the formation of plate-shaped BaZn2Fe16O27 occurred at a lower temperature (900 degrees C) than that of rod-shaped BaZn2Fe16O27 (1000 degrees C). The plate-shaped BaZn2Fe16O27 presents higher saturation magnetization (68.68 emu/g) and lower coercivity (317.31Oe) than the rod-shaped BaZn2Fe16O27. The analysis indicates that the plate-shaped BaZn2Fe16O27 owns better crystallinity than the rod-shaped BaZn2Fe16O27 and the crystallinity difference origins from the use of template in synthesis of rod-shaped BaZn2Fe16O27. The crystallinity and morphology greatly affect the magnetic behaviors of plate-shaped BaZn2Fe16O27 and rod-shaped BaZn2Fe16O27. The saturation magnetization depends on the crystallinity, and the shape anisotropy plays an important role in the coercivity. (C) 2019 Elsevier B.V. All rights reserved.
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页码：164 / 170
页数：7
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