Journal
MATERIALS
Volume 15, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/ma15031258
Keywords
ceramics; zirconium tin titanate; Zr-0; 8Sn(0); 2TiO(4); spark plasma sintering; microwave dielectric properties; terahertz time-domain spectroscopy
Categories
Funding
- Ministry of Research and Innovation, CNCS-UEFISCDI [PN-III-P2-2.1-PED-2019-3351, PN19-03, 21 N/08.02.2019]
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Zr0.8Sn0.2TiO3 (ZST) powders were synthesized and processed by spark plasma sintering (SPS). The annealed samples exhibited lower dielectric loss as indicated by the Q x f product.
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 degrees C and 1200 degrees 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 degrees C. The dielectric loss of the annealed samples, expressed by the Q x f product, measured in the microwave (MW) domain, varied between 35 THz and 50 THz. The intrinsic losses (Q x f ~ 60 THz) were derived by using terahertz time-domain spectroscopy (THz-TDS).
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