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PHASE FORMATION AND ELECTRICAL PROPERTIES OF BCLTS CERAMICS SYNTHESIZED VIA THE SOLID-STATE COMBUSTION TECHNIQUE
Author(s)
Somsri, Widchaya
Charoenthai, Nipaphat
Sutthapintu, Aekkasit
Noisak, Jitrawan
Rittidech, Aurawan
Bongkarn, Theerachai
Date Issued
January 1, 2025
Type
Article
Abstract
Lead-free Ba0.93Ca0.04La0.03Ti0.90Sn0.10O3 (BCLTS) ceramics were fabricated via solid-state combustion technique. The BCLTS powders were calcined in a temperature range of 1075-1175°C for 2h and sintered in a temperature range of 1350-1450°C for 2h. The BCLTS powders exhibited a pure perovskite phase when calcined above 1150°C. All BCLTS ceramic samples displayed a perovskite structure with coexisting cubic and tetragonal phases, with a secondary phase observed only at 1450°C. The growth of grain size was increased with increasing sintering temperature (0.42 to 0.65 μm.). The highest dielectric and ferroelectric properties (εr=3047, tan δr = 0.029, Pmax = 9.52 μC/cm2, Pr = 0.48 μC/cm2, Ec= 1.04 kV/cm) were obtained at the sintering temperature of 1400°C. The altered phase structure in this research, compared to earlier studies, results in distinct outcomes for the dielectric and ferroelectric properties.
Citation
Suranaree Journal of Science and Technology, 32(2), 0302771-0302779, 2025