Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba2Co2Fe28O46 Prepared by High-Temperature Solid-State Reaction

Li, Ning; Guo, Ziyu; Zhang, Yupeng; Li, Qin; Dong, Fuyuan; Feng, Gangli

doi:10.3390/ma19132703

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Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction

by

Ning Li

^1,2,

Ziyu Guo

¹,

Yupeng Zhang

¹,

Qin Li

¹,

Fuyuan Dong

^1,2

and

Gangli Feng

^1,2,*

¹

School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, China

²

National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology, Yinchuan 750021, China

^*

Author to whom correspondence should be addressed.

Materials 2026, 19(13), 2703; https://doi.org/10.3390/ma19132703 (registering DOI)

Submission received: 18 May 2026 / Revised: 6 June 2026 / Accepted: 22 June 2026 / Published: 23 June 2026

(This article belongs to the Section Advanced and Functional Ceramics and Glasses)

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Abstract

With the advancement of electronics and communication technologies, there is growing interest in high-performance microwave-absorbing materials. The material composition and structural design are critical factors influencing the electromagnetic wave (EMW) absorption capabilities. X-type barium ferrite (Ba₂Co₂Fe₂₈O₄₆) exhibits advantages in enhancing high-frequency magnetic loss and interface polarization through its unique hexagonal crystal structure and morphological design, while also optimizing impedance matching to a certain extent. However, the effective absorption bandwidth (EAB) of single-phase barium ferrite is often restricted. Therefore, doping with other elements is necessary to broaden the EAB. In this study, La³⁺-substituted X-type hexagonal ferrites Ba₂Co₂Fe_28−xLa_xO₄₆ (x = 0.00, 0.05, 0.10, 0.15, and 0.20) were successfully synthesized via a high-temperature solid-state reaction method, and the effects of different La³⁺ doping concentrations on the electromagnetic parameters and wave-absorbing performance of Ba₂Co₂Fe₂₈O₄₆ were investigated. After doping, the materials demonstrated excellent electromagnetic absorption performance: when x = 0.15, RL_min = −48.36 dB; when x = 0.10, EAB = 9.03 GHz (RL ≤ −5 dB).

Keywords: X-type hexagonal ferrite; lanthanum-doping; high-temperature solid-state method; electromagnetic properties; microwave absorption

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MDPI and ACS Style

Li, N.; Guo, Z.; Zhang, Y.; Li, Q.; Dong, F.; Feng, G. Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction. Materials 2026, 19, 2703. https://doi.org/10.3390/ma19132703

AMA Style

Li N, Guo Z, Zhang Y, Li Q, Dong F, Feng G. Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction. Materials. 2026; 19(13):2703. https://doi.org/10.3390/ma19132703

Chicago/Turabian Style

Li, Ning, Ziyu Guo, Yupeng Zhang, Qin Li, Fuyuan Dong, and Gangli Feng. 2026. "Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction" Materials 19, no. 13: 2703. https://doi.org/10.3390/ma19132703

APA Style

Li, N., Guo, Z., Zhang, Y., Li, Q., Dong, F., & Feng, G. (2026). Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction. Materials, 19(13), 2703. https://doi.org/10.3390/ma19132703

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Effects of Lanthanum Doping on the Microstructure and Electromagnetic Properties of X-Type Hexaferrite Ba₂Co₂Fe₂₈O₄₆ Prepared by High-Temperature Solid-State Reaction

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