Synthesis and electromagnetic properties of La-doped Ni-Zn ferrites

被引：96
作者：
Wang, Yan [1 ]
Wu, Xinming [1 ]
Zhang, Wenzhi [1 ]
Chen, Weixing [1 ]
机构：
[1] Xian Technol Univ, Sch Mat Sci & Chem Engn, Xian 710032, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 398卷
关键词：
Ni0.8Zn0.2Fe2O4; Sol-gel method; La3+ substitution; Magnetic property; Electromagnetic property; MICROWAVE ABSORBING PROPERTIES; SOL-GEL PROCESS; MAGNETIC-PROPERTIES; ELECTRICAL-PROPERTIES; BARIUM FERRITES; SUBSTITUTION; HEXAFERRITES; COMPOSITES; TRANSPORT; POWDERS;
D O I：
10.1016/j.jmmm.2015.09.044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The La3+ doped spinel ferrites, Ni0.8Zn0.2LaxFe2-xO4,Were prepared by a sol-gel method. The samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and vector network analyzer (VNA). Results show that La3+ can completely substitute into the lattice of Ni0.8Zn0.2Fe2O4 and exist mostly in the form of lamellar structure. Ni0.8Zn0.2LaxFe2-xO4 (X=0-0.1) show the behaviors of the soft magnets and the saturation magnetization (M-s) decreases with the increasing of La3+ content. The electromagnetic property of Ni0.8Zn0.2La0.06Fe1.94O4 is below - 10 dB at 3.1-5.9 GHz and its minimum loss value is - 15.43 dB at 5.1 GHz. Therefore, the introduction of La3+ improves the microwave absorbing properties of Ni0.8Zn0.2Fe2O4. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：90 / 95
页数：6
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