Microwave and Terahertz Properties of Spark-Plasma-Sintered Zr0.8Sn0.2TiO4 Ceramics

Zr0.8Sn0.2TiO3 (ZST) powders synthesized by solid-state reaction were subject to processing by spark plasma sintering (SPS). A single-phase ceramic with a high relative density of 95.7% and 99.6% was obtained for sintering temperatures of 1150 °C and 1200 °C, respectively, and for a dwell time of 3...

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Published inMaterials Vol. 15; no. 3; p. 1258
Main Authors Nedelcu, Liviu, Burdusel, Mihail, Grigoroscuta, Mihai Alexandru, Geambasu, Cezar Dragos, Enculescu, Monica, Badica, Petre, Banciu, Marian Gabriel
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 08.02.2022
MDPI
Subjects
Annealing
Ceramic powders
Ceramics
Chemical synthesis
Communication
Density
Dielectric loss
Dielectric properties
Dwell time
Morphology
Sintering
Sintering (powder metallurgy)
Spark plasma sintering
United States > US
Germany
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Summary:Zr0.8Sn0.2TiO3 (ZST) powders synthesized by solid-state reaction were subject to processing by spark plasma sintering (SPS). A single-phase ceramic with a high relative density of 95.7% and 99.6% was obtained for sintering temperatures of 1150 °C and 1200 °C, respectively, and for a dwell time of 3 min. In order to reduce the oxygen vacancies, as-sintered discs were annealed in air at 1000 °C. The dielectric loss of the annealed samples, expressed by the Q × f product, measured in the microwave (MW) domain, varied between 35 THz and 50 THz. The intrinsic losses (Q × f ~ 60 THz) were derived by using terahertz time-domain spectroscopy (THz-TDS).
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma15031258