Influence of Sr²⁺ Doping Quantity on Microstructure and Magnetic Performance of Z Type Hexagonal Ferrite

Abstract:

Co₂Z type planar hexaferrite doping of Sr²⁺ 2CoO∙3Ba_1-xSr_xO∙10.8Fe₂O₃ is made with common production process of cermet. The paper studied the influence of Sr²⁺ doping quantity on microstructure and magnetic performance of Co₂Z type planar hexaferrite. The result indicates that when the doping quantity x=0.4, the magnetic performance in ultrahigh frequency will get improved, the initial permeability can grow to 14, and the cut-off frequency will also relatively increase to 2.45GHz.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 789-793
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.789
• Online since: July 2012
• Authors: Li Hua Yu, Jing Yao, Ze Kun Feng, Ai Ping Huang
• Keywords: Co₂Z Type Hexaferrite, Magnetic Performance, Microstructure, Sr²⁺ Doping Quantity, Ultra-High Frequency (UHF)

References

[1] Yingming Tang, Lijun Jia, Huaiwu Zhang, Shuiming Yin and Tao Li: Investigation of low-temperature sintering of Z-type hexaferrite with Bi(Co),Zn substitution and Bi_2O_3 additive [J], Journal of Magnetic Materials and Devices, 2011, (01), In Chinese.

[2] Xiaobin Yan, Feng Gao, Xiangchun Liu, Changsheng Tian: Effect of B_2O_3 Addition on the Sintering Behaviors and Magnetic Properties of Co_2Z-type Hexagonal Ferrites[J], Piezoelectrics & Acoustooptics, 2007, (05), In Chinese.

[3] Yingming Tang, Lijun Jia, Huaiwu Zhang, Shuiming Yin and Tao Li: Application and Research Status of Z-type Hexaferrites Used in UHF Band [J], Journal of Magnetic Materials and Devices, 2010, (06), In Chinese.

[4] Zhiquan Han: Developments of Ultrahigh Frequency Soft Hexagonal Ferrite and Composite Ferrite Materials[J], Journal of Magnetic Materials and Devices, 2010, (03), In Chinese.

[5] Zekun Feng, Aiping Huang, Dandan Xu, Jinping Sheng: Ferroxplana Co_2Z Hexagonal Ferrites Materials for Applications at Quasi-microwave Band [J], Journal of Magnetic Materials and Devices, 2008, (06), In Chinese.

[6] Lei Gong, Yingming Tang, Jun Luo, Lijun Jia and Huaiwu Zhang: Influence of Ti~(4+)-Zn~(2+) composite substitution on the electromagnetic properties of Co_2Z hexagonal ferrites [J], Electronic Components and Materials, 2010, (06), In Chinese.

[7] Osamu Kimura，Masafumi Matsumoto，Mitama Sakakura，Enhanced Dispersion Frequency of Hot-Pressed Z-Type Magnetoplumbite Ferrite with the Comosition 2CoO·3Ba0.5Sr0.5O·10.8Fe2O3 . J. Am. Ceram. Soc.，1995，78(10)：2857～2860.

DOI: 10.1111/j.1151-2916.1995.tb08068.x

[8] Takada Y, Nakagawa T, Tokunaga M, et al. Crystal and magnetic structures and their temperature dependence of Co2Z-type hexaferrite (Ba,Sr)3Co2Fe24O41 by hightemperature neutron diffraction [J]. J Appl Phys, 2006,100(4): 043904.

DOI: 10.1063/1.2204334