Sintering behavior and electrical properties of the paraelectric/dielectric composite system BST/MBO

Häuser, Kevin; Azmi, Raheleh; Jakoby, Rolf; Maune, Holger; Hoffmann, Michael J.; Binder, Joachim R.

doi:10.1016/j.jeurceramsoc.2021.07.008

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…A tabular overview of the measured properties can be found in the Appendix A in Table A1 . A direct comparison of the simulation results and the experimental results was omitted due to the somewhat arbitrary input values of the simulation, namely the values of the pure materials, which did not line up in the interpolation with the composite materials (see [ 17 ]).…”

Section: Resultsmentioning

confidence: 99%

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Network-Structured BST/MBO Composites Made from Core-Shell-Structured Granulates

et al. 2023

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A finite element method (FEM)-based simulation approach to predict the tunability in composite materials was developed and tested with analytical data. These tests showed good prediction capabilities of the simulation for the test data. The simulation model was then used to predict the tunability of a network-structured composite, where the dielectric phase formed clusters in a paraelectric network. This was achieved by simulating a reciprocal core-shell unit cell of said network. The simulation showed a high tunability for this network model, exceeding the tunability of the analytically evaluated layered, columnar, and particulate model. The simulation results were experimentally verified with a Ba0.6Sr0.4TiO3/Mg3B2O6 (BST/MBO) composite, where core-shell granulates were made with a two-step granulation process. These structured samples showed higher tunability and dielectric loss than the unstructured samples made for comparison. Overall, the structured samples showed higher tunability to loss ratios, indicating their potential for use in tunable radio frequency applications, since they may combine high performance with little energy loss.

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Section: Resultsmentioning

confidence: 99%

“…In order to realize the simulated core-shell structure, a two-step granulation structuring process was developed. The materials were prepared as described in a previous study, which also showed the characterization results of the materials [ 17 ]. In the first step, an MBO granulate was prepared as the core structure of the composite.…”

Section: Methodsmentioning

confidence: 99%