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<p>For reducing electromagnetic wave pollution, development of high-performance electromagnetic wave absorption (EWA) materials has emerged as an imperative and pressing challenge. Perovskite ceramics are considered potential candidates due to the structural adjustability, excellent thermal stability, and high mechanical strength. In this study, phase composition of perovskite ceramic BaZr<sub>0.4</sub>Ce<sub>0.3</sub>Y<sub>0.1</sub>Yb<sub>0.1</sub>Fe<sub>0.1</sub>O<sub>3</sub> (BZF) was modified by controlling its sintering temperature to enhance its EWA performance. With increasing temperature, the BZF underwent gradual growth and the interface became clearer, indicating successful construction of the biphasic structure. The design of this biphasic structure induced strong interfacial polarization and aided in optimizing impedance matching. Results showed that BZF sintered at 1450&#xa0;°C achieved the best EWA performance, with a minimum reflection loss of −&#xa0;58.6 dB and a maximum effective absorption bandwidth of 2.5 GHz at a thickness of 2.1 mm. Furthermore, radar cross-section simulations confirmed the practical applicability of BZF. This study offers valuable insights for designing perovskite ceramics with excellent EWA performance.</p>

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Phase modulation of a novel perovskite ceramic BaZr0.4Ce0.3Y0.1Yb0.1Fe0.1O3 for enhanced electromagnetic wave absorption

  • 期刊论文

  • 发表日期：

    2025年4月24日

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  • Youdong Chen,
  • Yingbiao Peng,
  • Han Chen,
  • Yang Li,
  • Lan Long,
  • Wei Zhou

摘要

For reducing electromagnetic wave pollution, development of high-performance electromagnetic wave absorption (EWA) materials has emerged as an imperative and pressing challenge. Perovskite ceramics are considered potential candidates due to the structural adjustability, excellent thermal stability, and high mechanical strength. In this study, phase composition of perovskite ceramic BaZr0.4Ce0.3Y0.1Yb0.1Fe0.1O3 (BZF) was modified by controlling its sintering temperature to enhance its EWA performance. With increasing temperature, the BZF underwent gradual growth and the interface became clearer, indicating successful construction of the biphasic structure. The design of this biphasic structure induced strong interfacial polarization and aided in optimizing impedance matching. Results showed that BZF sintered at 1450 °C achieved the best EWA performance, with a minimum reflection loss of − 58.6 dB and a maximum effective absorption bandwidth of 2.5 GHz at a thickness of 2.1 mm. Furthermore, radar cross-section simulations confirmed the practical applicability of BZF. This study offers valuable insights for designing perovskite ceramics with excellent EWA performance.