Yue Xian, Yang Zhou, Jia Chen, Wenyuan Li, Ruifeng Wu, Shuangji Feng, Aimin Chang, Bo Zhang
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引用次数: 0
摘要
固溶体调制是一种理想的方法，既能结合不同母体化合物的优点，又能减轻它们的缺点。在此，我们研究了 MgxMn1-xAl2xFe2(1-x)O4 (0.2 ≤ x ≤ 0.8) 尖晶石固溶体陶瓷的热敏性、磁性和微波吸收，以应用于多功能设备。通过调整溶液比例，可以调节电传输和磁特性。陶瓷呈现负温度系数特性。其 B 值范围为 5065-8056 K，表明可以在很宽的温度范围内进行精确的温度测量。作为一种软磁材料，它具有窄磁滞回线和高电阻率。矢量网络分析仪研究表明，Mg0.2Mn0.8Al0.4Fe1.6O4 可能是 S 波段微波吸收的候选材料。这项研究成功地扩展了 MgxMn1-xAl2xFe2(1-x)O4 陶瓷在高温热敏电阻中的应用，同时也证实了其在多功能器件中的潜力。
Modulation of solid solution in MgxMn1−xAl2xFe2(1−x)O4 spinel ceramics for multifunctional devices
Solid solution modulation is an ideal method for combining the advantages of different parent compounds while mitigating their disadvantages. Here, we investigated the thermal sensitivity, magnetic properties, and microwave absorption of MgxMn1−xAl2xFe2(1−x)O4 (0.2 ≤ x ≤ 0.8) spinel solid solution ceramics for application in multifunctional devices. The electrical transport and magnetic properties can be modulated by adjusting the solution ratio. The ceramics exhibit negative temperature coefficient characteristic. The B-values from 5065–8056 K, suggesting accurate temperature measurements over a wide temperature range. As a type of soft magnetic material, it has a narrow hysteresis loop and high resistivity. Vector network analyzer studies indicate Mg0.2Mn0.8Al0.4Fe1.6O4 could be a candidate for microwave absorption in S-band. This study successfully extends the applicability of MgxMn1−xAl2xFe2(1−x)O4 ceramics for high-temperature thermistors and also confirms potential for multifunctional device.
期刊介绍：
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
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