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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis of nickel zinc ferrite ceramics on enhancing gyromagnetic properties by a novel low-temperature sintering approach for LTCC applications
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Synthesis of nickel zinc ferrite ceramics on enhancing gyromagnetic properties by a novel low-temperature sintering approach for LTCC applications

机译：用LTCC应用新型低温烧结方法改进镀锌性能的镍锌铁氧体陶瓷

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摘要

Saturation magnetization and ferromagnetic resonance linewidth are important parameters for microwave devices, such as circulator/isolator. Conventional sintering of ferrite ceramics is prevalently performed to promote the densification. Here, we present a new sintering approach for obtaining uniform and dense NiCuZn ferrite ceramics with enhanced gyromagnetic properties at low temperatures. The NiZn-series ferrites (Ni0.2Cu0.2Zn0.6Fe2O3 - 1.0 wt% Bi2O3+0.5 wt% MnO2) was synthesized by solid reaction routes with new sintering approaches. The results indicate that a one-transient-step sintering process (OTSP) can significantly improve the gyromagnetic properties at low sintering temperatures by suppressing the anomalous grain growth, such as higher saturation magnetization (4 pi M-s = similar to 3904 Gauss) and lower ferromagnetic resonance linewidth (Delta H = similar to 170 Oe). Therefore, such a methodology is quite significant due to it provides a referential experience for effective sintering route that can enable broad practical applications, such as other ferrite ceramics. (C) 2018 Elsevier B.V. All rights reserved.
机译：饱和磁化和铁磁共振线宽是微波器件的重要参数，如循环器/隔离器。普遍进行铁氧体陶瓷的常规烧结以促进致密化。在这里，我们提出了一种新的烧结方法，用于获得均匀和致密的Nicuzn铁氧体陶瓷，其在低温下具有增强的旋转磁性。通过具有新烧结方法的固体反应途径合成了NizN系列铁氧体（Ni0.2Cu0.2ZN0.6Fe2O3 - 1.0wt％Bi2O3 + 0.5wt％MnO2）。结果表明，通过抑制异常晶粒生长，例如更高的饱和磁化强度（4pi ms =类似于3904高斯，4904高斯）和更低的铁磁，可以显着提高单瞬时步骤烧结过程（OTSP）可以显着改善低烧结温度下的旋转磁性特性。共振线宽（Delta H =类似于170 OE）。因此，这种方法是由于它提供了有效烧结路线的参考体验，可以实现广泛的实际应用，例如其他铁氧体陶瓷。 （c）2018年elestvier b.v.保留所有权利。

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