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Ultra-wide Effective Absorption Bandwidth of Cu, Co, and Ti Co-Doped SrFe12O19 Hexaferrite

Ceramics International(2022)SCI 2区SCI 1区

Van Lang Univ | TNU Univ Sci | Duy Tan Univ | Univ Danang | Hankuk Univ Foreign Studies | Le Quy Don Tech Univ | Vietnam Acad Sci & Technol

Cited 13|Views24
Abstract
Cu, Co, and Ti elements were co-doped to SrFe12O19 (SrFm12-2xCux/2Cox/2TixO19, x = 0, 0.05, 0.10, and 0.15) and its physical properties as well as the effects of physical properties on the microwave absorption performance were studied in detail. All samples showed fairly good microwave absorption performance in reflection loss (RL) and effective absorption bandwidth (EAB). For RL, with a thickness of 0.75 mm, all the samples could absorb about 99.99% of the incident microwave. Besides good RL, the enhancement of EAB to reach an ultra-wide frequency range should be noted. Three samples of x = 0, 0.05, and 0.15 could achieve the EAB values of similar to 10 GHz. Interestingly, the x = 0.10 samples could reach the EAB value of 15.9 GHz, meaning that this sample could cover almost all the S, C, X, and Ku bands. These results proved that co-doping of Cu, Co, and Ti could enhance the microwave absorption of SrFe12O19 for practical applications.
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Hexaferrite,SrFe12O19,Transition metal doping,Electromagnetic,Microwave absorption
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要点】:研究通过共掺杂Cu、Co和Ti元素到SrFe12O19中,显著提升了微波吸收性能,实现了超宽有效吸收带宽。

方法】:采用元素共掺杂策略,通过调节Cu、Co和Ti的摩尔比例,改变SrFe12O19的物理性质,进而影响微波吸收性能。

实验】:制备不同掺杂比例的样品,并在0.75 mm厚度下测试其反射损失(RL)和有效吸收带宽(EAB),数据集名称未提及。结果显示,所有样品的RL接近99.99%,且三个特定掺杂比例的样品EAB分别达到约10 GHz,其中一个比例达到15.9 GHz。