Pseudo‐binary composite of Sr 2 TiMoO 6 –Al 2 O 3 as a novel microwave absorbing material
Source abstract
Abstract
Abstract In this work, a novel microwave absorbing material (MAM) made of a pseudo‐binary of Sr 2 TiMoO 6 –Al 2 O 3 (STM) is proposed first. The MAMs labeled as STM X ( X = 60, 70, 80 and 100, respectively), in which X is the initial weight percent of Sr 2 TiMoO 6 , were synthesized using the solid‐state reaction method. Compared with STM100, some equilibrium phases, including SrTiO 3 , Mo, Sr 8 (Al 12 O 24 )(MoO 4 ) 2 and a few undefined ones, are presented in the composites as evidenced by X‐ray diffraction results and scanning electron microscopy due to the chemical reaction between Sr 2 TiMoO 6 and Al 2 O 3 component. Besides conductance loss, heterogeneous interfaces between various equilibrium phases introduce interfacial polarization, which causes an enhancement of dissipation for the incident electromagnetic wave. Among the synthesized samples, STM80 presents the best microwave absorbing properties. It has a minimum reflection loss (RL min ) of − 26 dB and an effective absorbing bandwidth up to 2.7 GHz when the thickness is only 1 mm. This indicates that STM80 is a new type of microwave absorbing material with strong absorption and ultrathin thickness.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering Beihang University 100191 Beijing China
Faculty of Material Science and Engineering Kunming University of Science and Technology 650093 Kunming China
Funding
China Postdoctoral Science Foundation · Natural Science Foundation of China · 111 Project
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