Abstract Planar anisotropy ferromagnetic Pr2Co17 flakes were synthesized by combining vacuum arc-melting method and high-energy ball-milling process. The saturated magnetization (Ms) and coercive force (Hc) of Pr2Co17 are 111 emu g−1 and 148 Oe, respectively. The high-frequency electromagnetic properties were discussed in detail. The microwave-absorption results show that the RLs (reflection loss values) below −10 dB are obtained in the range of 7.6–11.8 GHz at the thickness of 2.5 mm, which covers most of the X-band (8–12 GHz). For a given matching thickness of 1.5 mm, the RLs below −10 dB are obtained in 12.3–16.2 GHz, which covers most of the Ku-band (12–18 GHz). A delta function is used to evaluate the impendence matching degree. This work indicates that the Pr2Co17 submicron flakes possess strong microwave absorption at a broad bandwidth, thus are promising for the practical applications in microwave-absorption field.

中文翻译：

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高能球磨法制备平面各向异性铁磁Pr2Co17薄片的微波吸收性能

摘要 采用真空电弧熔炼法与高能球磨工艺相结合，合成了平面各向异性铁磁Pr2Co17薄片。Pr2Co17 的饱和磁化强度 (Ms) 和矫顽力 (Hc) 分别为 111 emu g-1 和 148 Oe。详细讨论了高频电磁特性。微波吸收结果表明，在 7.6-11.8 GHz 范围内以 2.5 mm 的厚度获得低于 -10 dB 的 RL（反射损耗值），该范围覆盖了大部分 X 波段（8-12 GHz）。对于 1.5 mm 的给定匹配厚度，在 12.3-16.2 GHz 中获得低于 -10 dB 的 RL，该频率覆盖了大部分 Ku 频段（12-18 GHz）。delta函数用于评估阻抗匹配度。这项工作表明 Pr2Co17 亚微米薄片在很宽的带宽下具有很强的微波吸收，