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

被引：4
|
作者：
Nedelcu, Liviu [1 ]
Burdusel, Mihail [1 ]
Grigoroscuta, Mihai Alexandru [1 ]
Geambasu, Cezar Dragos [1 ]
Enculescu, Monica [1 ]
Badica, Petre [1 ]
Banciu, Marian Gabriel [1 ]
机构：
[1] Natl Inst Mat Phys, Atomistilor 405A, Magurele 077125, Romania
来源：
MATERIALS | 2022年 / 15卷 / 03期
关键词：
ceramics; zirconium tin titanate; Zr-0; 8Sn(0); 2TiO(4); spark plasma sintering; microwave dielectric properties; terahertz time-domain spectroscopy; DIELECTRIC-PROPERTIES; (ZR; SN)TIO4; RESONATORS; LA2O3;
D O I：
10.3390/ma15031258
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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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页数：9
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