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Effects of (Al0.5Nb0.5)4+ on the phase constitution, microtopography, and microwave dielectric properties for BaZn2Ti4O11 ceramics

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Abstract

In this article, we synthesized BaZn1.98Cu0.02Ti4O11 ceramics co-doped with a complex ion (Al0.5Nb0.5)4+, resulting in improved microwave characteristics. Our analysis revealed that all BaZn1.98Cu0.02Ti4–x(Al0.5Nb0.5)xO11 (BZCTAN) samples formed the main phase of BaZn2Ti4O11. Increasing the number of dopants increased the bulk density, which in turn increased the dielectric constant (εr) and temperature coefficient of the resonance frequency (τf) values consistently. The quality factor (Q×f) showed a tendency to increase and then decrease as the x value increased. Results indicated that a moderate content of (Al0.5Nb0.5)4+ can improve the Q×f value. However, an excess of (Al0.5Nb0.5)4+ resulted the formation of the second phase of Ba3Nb4Ti4O21, which reduced the grain size and the Q×f value in BZCTAN samples. At last, the BaZn1.98Cu0.02Ti3.8(Al0.5Nb0.5)0.2O11 ceramic sample sintered at 1170 °C demonstrated good microwave dielectric properties of ɛr = 30.6, Q×f = 53,126 GHz, and τf = − 32.3 ppm/°C.

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Funding

This work is supported by the Key Research and Development Program of Sichuan Province (Grant No. 2022YFG0226) and the Scientific Research Foundation of CUIT (Grant No. KYTZ202179).

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Authors and Affiliations

  1. School of Engineering and Technology, Chengdu College of University of Electronic Science and Technology of China, Chengdu, 611731, China

    Juncheng Ma & Ying Xiong

  2. Chengdu Hongming Electronics Co., Ltd., Chengdu, 610199, China

    Zhe Xiong

  3. Sichuan Province Key Laboratory of Information Materials and Devices Application, College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China

    Xing Zhang

  4. National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Bin Tang

  5. National Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Bin Tang

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  1. Juncheng Ma
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by JM and ZX.The first draft of the manuscript was written by JM, and all authors commented on the previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Zhe Xiong.

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Ma, J., Xiong, Z., Xiong, Y. et al. Effects of (Al0.5Nb0.5)4+ on the phase constitution, microtopography, and microwave dielectric properties for BaZn2Ti4O11 ceramics. J Mater Sci: Mater Electron 34, 1307 (2023). https://doi.org/10.1007/s10854-023-10724-z

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