Dielectric properties in the microwave range of Na₃Zr₂Si₂PO₁₂ ceramics

Dielectric properties in the microwave range of Na₃Zr₂Si₂PO₁₂ ceramics have been rarely studied. The work attempted to develop a new kind of high temperature microwave absorption material. Na₃Zr₂Si₂PO₁₂ ceramics were sintered at different temperatures by a traditional solid-state reaction method for dielectric and microwave absorption properties study. Results showed that the complex permittivity increased to the maximum at 1250 °C then decreased with the elevated sintering temperature. The effective absorption bandwidth (below −5 dB) was obtained in 8.98–12.4 GHz for the ceramic in 2.3 mm thickness and the lowest reflection loss is −12.9 dB at 10.74 GHz, which indicated that Na₃Zr₂Si₂PO₁₂ ceramics would be potential microwave absorption materials by further improvement.