期刊
CERAMICS INTERNATIONAL
卷 46, 期 7, 页码 9722-9728出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.12.240
关键词
NiFe2O4; Magnetism; Dielectric constant; Impedance spectroscopy
资金
- National Natural Science Foundation of China (NSFC) [51602214, 11604234, 11404236]
- Natural Science Foundation of Shanxi Province [201601D202010]
(Li1+, Zn2+ and La3+) co-substituted NiFe2O4 ferrite ceramics (Ni0.8-xZnxLi0.1La0.1Fe2O4, x = 0.0, 0.2, 0.4, 0.6, 0.8) were prepared by the sol-gel auto-combustion method. The structural properties were investigated by X-ray diffraction and field emission scanning electronic microscope techniques. Vibrating sample magnetometer and LCR meter were used to probe magnetic and dielectric properties. A relatively high value of saturation magnetization (105.94 emu/g) can be achieved in Ni0.4Zn0.4Li0.1La0.1Fe2O4 sample sintered at 1100 degrees C. In addition, the soft magnetic properties are also enhanced due to a reduced coercivity value. Also, dielectric behavior is improved and all the results show that co-substitution with Li1+ , Zn2+ and La3+ ions as well as modulation via Zn2+ ions has a great impact on the properties of Ni ferrites.
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