Structural, magnetic and electrical properties of CoSi ferrites synthesized by sol-gel self-propagating method
作者:Zheng-Xiong Tao、Le-Zhong Li、Xiao-Hui Wu、Xiao-Xi Zhong、Zi-Chen Zhong
DOI:10.1016/j.physb.2020.412655
日期:2021.3
amount of silicon substitution on the properties of cobalt ferrite were studied. The X-ray diffraction spectrums demonstrate that the secondary phase Fe2O3, Fe2·56Si0·44O4 and FeO appear when x ≥ 0.15. The SEM images of the samples show that with the increase of silicon ion content, the porosity of cobalt ferrite increases and the sintering density decreases. The substitution of silicon significantly
CoFe 2 O 4主要用于磁应变传感器,磁共振成像,超级电容器,冷冻剂,高密度磁记录介质和磁光器件等。本研究 采用溶胶-凝胶自蔓延法制备了Si x Co 1- x Fe 2 O 4(x = 0、0.05、0.10、0.15、0.30、0.40、0.50)铁素体,并研究了不同用量的影响。研究了硅取代对钴铁氧体性能的影响。X射线衍射光谱表明,第二相Fe 2 O 3,Fe 2·56 Si 0·44 O 4和FeO出现时X ≥0.15。样品的SEM图像表明,随着硅离子含量的增加,钴铁氧体的孔隙率增加,烧结密度降低。硅的替代显着改变了钴铁氧体样品的电磁性能。幸运的是,矫顽力(H c)增加了。此外,介电常数最初升高时0≤ X ≤0.30,然后降低时0.30 < X ≤0.50与在低频率下提高Si替代,其在达到最大X = 0.30。