Effect of Dy replacing Fe on microstructure, electrical properties, and magnetic properties of NiZnCo ferrite

Abstract

Considering how quickly wireless communication has developed, the need for the miniaturization, integration and high frequency of electronic components is more intense. The improvement of material properties is the key to solving the difficulties in the development of electronic devices. Solid-phase reactions were used to create Ni0.5Zn0.4Co0.1DyxFe2-xO4 (NZCDF, 0 ≤ x ≤ 0.1) ferrite ceramics. The produced NZCDF ceramic samples are discovered to still have a spinel structure. The lattice constant a and bulk density dBulk increase when dysprosium ion is added. The saturation magnetization decreased from 82 to 71 emu/g, and the Hc increased from 18 to 23 Oe. Dysprosium can be added to ceramic samples to modify their level of polarization, lower their ε′, and minimize their dielectric loss. The DC resistance ρ increases to 6.3 × 103 Ω⋅m. In the higher frequency range, with the increase of dysprosium ion content, the magnetic quality factor Q increases significantly, its peak value expands, and its corresponding frequency shifts to a higher frequency. In the high-frequency region, the magnetic quality factor Q rises dramatically, its peak value expands, and its corresponding frequency shifts to a higher frequency. The peak Q of the Ni0.5Zn0.4Co0.1Dy0.1Fe1.9O4 sample increased to 14.71, and the frequency corresponding to the peak Q increased to 35.08 MHz. In short, substituting dysprosium ions for nickel-zinc-cobalt ferrite broadens the application range of ferrite ceramics in high-frequency devices. The spectrum of applications for ferrite ceramics in high-frequency devices is expanded by substituting rare earth dysprosium ions for NiZnCo ferrite ceramics.