Sintering behavior and dielectric properties of Ce doped strontium barium niobate ceramics with silica sintering additive

Wang, Lili; Sui, Wanmei; Luan, Shijun; Ranran, Song; Tan, Jun

doi:10.1016/j.matchemphys.2012.03.028

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…This lower transition temperature might have resulted from the slightly lower grain size of our samples. It was reported that Ce doping suppresses grain growth in Sr 0.5 Ba 0.5 Nb 2 O 6 ceramics and in turn causes a significant decrease in Curie temperature due to the larger internal stress in fine grained samples [35]. The dielectric loss of the sample decreased with increasing temperature until the temperature of the dielectric maximum and then reaches a plateau for 10 and 100 kHz.…”

Section: Dielectric Propertiesmentioning

confidence: 94%

Electrocaloric effect of alkali co-substituted Sr0.6Ba0.4Nb2O6 ceramics

Kurnia

Emriadi

Mufti

et al. 2020

Journal of Alloys and Compounds

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We have investigated the electrocaloric properties of K + and Na + co-substituted Sr 0.6 Ba 0.4 Nb 2 O 6 (SBN) ceramics using the indirect method. Tetragonal tungsten bronze (K 0.5 Na 0.5 ) 2x (Sr 0.6 Ba 0.4 ) 5-x Nb 10 O 30 (KNSBN) with x = 0.24 was synthesized using dual-step sintering. Despite the low amount, K + and Na + co-substitution resulted in normal ferroelectric behaviour, showing no significant shift in the dielectric maximum temperature of 111°C with increasing frequency. Maximum electrocaloric temperature change (ΔT) of 0.3 K was observed at an electric field of 30 kV/cm (ΔE) yielding the largest electrocaloric responsivity (ΔT/ΔE) among SBN based ceramics. This relatively large value is in agreement with the larger pyroelectric coefficient of KNSBN compared to SBN based ceramics.

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Section: Dielectric Propertiesmentioning

confidence: 94%