Abstract
Ba0.6Sr0.4TiO3/Mg0.9Zn0.1O (BST/MZO) ceramic composites with different MZO contents were prepared by traditional ceramic process. The crystal structure, fracture surface morphology, and dielectric properties were systematically investigated. The results show that the BST/MZO ceramic composites possess diphase structure, dense, and uniform morphology. The composites have relatively low dielectric loss (in the order of 10−3) at microwave frequency. The ceramics all retain substantial tunability (more than 20% at 8 kV/mm DC field) and excellent dielectric strength (more than 19.5 kV/mm). The BST-50 wt% MZO sample has the optimal FOM value (about 256) and should be a better candidate for tunable microwave applications.
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More From: Journal of Materials Science: Materials in Electronics
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