Enhanced magnetic properties of Sr0.7Ce0.3Fe11.7Zn0.3O19 by tuning pre-sintering temperature

被引：19

作者：

Lu, Shifan ^{[1
]}

Liu, Yingli ^{[1
]}

Yin, Qisheng ^{[1
]}

Chen, Jianfeng ^{[1
]}

Wu, Jian ^{[1
]}

Li, Jie ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Device, Chengdu 610054, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 941卷

基金：

中国国家自然科学基金;

关键词：

Hexaferrite; High remanence ratio; C-axis oriented; Pre-sintering temperature; CO-SUBSTITUTION; DIELECTRIC-PROPERTIES; FERRITES;

D O I：

10.1016/j.jallcom.2023.168833

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, pre-sintering temperature was tuned to investigate its effect on the structural and magnetic properties of oriented M-type hexagonal strontium ferrite Sr0.7Ce0.3Fe11.7Zn0.3O19. X-ray diffraction pattern shows that Fe2O3 and CeO2 impurity phases exist in all samples. As pre-sintering temperature increased, both saturation magnetization (Ms) and remanence ratio (Mr/Ms) first increased and then decreased. In contrast, coercivity (Hc) and magnetocrystalline anisotropy field (Ha) first decreased and then increased as pre-sintering temperature went up. The average grain size (D) increases monotonously with pre-sintering temperature. At pre-sintering temperature of 1200 degrees C, Sr0.7Ce0.3Fe11.7Zn0.3O19 achieved optimal magnetic properties of Ms = 58.24 emu/g, Mr/Ms = 0.95, Hc= 1816 Oe, Ha= 10433 Oe and K1 = 1.51 x 105J/m3. This work shows that the magnetic properties of M-type hexagonal strontium ferrite could be significantly improved by optimizing the pre-sintering temperature, which helps the design of high-performance and self-biased circulator.(c) 2023 Published by Elsevier B.V.

引用

页数：6

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