中国物理B ›› 2022, Vol. 31 ›› Issue (7): 78503-078503.doi: 10.1088/1674-1056/ac398c
Dandan Wen(文丹丹)1,2,3,†, Xia Chen(陈霞)3, Dasen Luo(骆大森)3, Yi Lu(卢毅)1, Yixin Chen(陈一鑫)3, Renpu Li(黎人溥)1, and Wei Cui(崔巍)3,‡
Dandan Wen(文丹丹)1,2,3,†, Xia Chen(陈霞)3, Dasen Luo(骆大森)3, Yi Lu(卢毅)1, Yixin Chen(陈一鑫)3, Renpu Li(黎人溥)1, and Wei Cui(崔巍)3,‡
摘要: The combined effects of Sm$^{3+}$ substitution together with the addition of 3 wt% Bi$_{2}$O$_{3}$ endow MgCd ferrites with excellent magnetic permeability and dielectric permittivity. Various concentrations of Sm$^{3+}$ ($x = 0$, 0.03, 0.06, 0.09, 0.12 and 0.15) were employed to modify the permeability ($\mu'$) and permittivity ($\varepsilon'$) of the MgCd ferrites. X-ray diffraction, scanning electron microscopy (SEM), vibrating sample magnetometry and vector network analysis techniques were used to characterize the samples. The measurement results reveal that the ferrites processed a saturation magnetization of up to 36.8 emu/g and coercivity of up to 29.2 Oe via the conventional solid-state reaction method. The surface morphology SEM confirms that with increasing Sm$^{3+}$ concentration, the grain shape changes from a polygon to a circle. Moreover, the dielectric permittivity can reach a value of 23. The excellent properties obtained in Sm$^{3+}$-substituted Mg ferrites suggest that they could be promising candidates for modern high-frequency antenna substrates or multilayer devices.
中图分类号: (Ferrite and garnet devices)