Ta substitution in K 0.5 Na 0.5 NbO 3 lead free piezoelectrics helps to prevent grain growth and has been shown to improve the piezoelectric properties but always leads to …
F Delorme, C Chen, B Pignon, F Schoenstein… - Journal of the European …, 2017 - Elsevier
Layered cobalt oxides have shown high thermoelectric properties. The n= 1 member of the Ba n+ 1 Co n O 3n+ 3 (Co 8 O 8) family, Ba 2 Co 9 O 14, a new layered cobalt oxides family …
MA Bousnina, R Dujardin, L Perriere… - Journal of Advanced …, 2018 - Springer
In this work, we synthesized cubic perovskite ceramics of the whole La 1–x Sr x CoO 3 (0≤ x≤ 1) solid solution for the first time. Synthesis was carried out by solid state reaction and …
Abstract K 0.5 Na 0.5 Nb 1-x Ta x O 3 (KNNT)(with x= 0.00, 0.05, 0.10, 0.20, 0.30, 0.50 and 1) ceramics are prepared by ball milling and two calcinations at 830° C for 5 h. Subsequent …
C Chen, F Giovannelli, JR Duclère… - Journal of the European …, 2017 - Elsevier
Abstract Fe 2 (Ti 1-x Nb x) O 5 (x= 0, 0.005, 0.01, 0.02, 0.05) pseudobrookite with high relative densities have been prepared by solid state reaction and conventional sintering …
F Delorme, R Dujardin, F Schoenstein, B Pintault… - Ceramics …, 2019 - Elsevier
The spark plasma sintering (SPS) behaviour of pure SnO 2 has been studied. Two different SnO 2 powders have been studied: a commercial 50–200 nm one and 4–6 nm …
The origin of low thermal conductivity in niobium-containing perovskites was investigated. Therefore, dense NaNbO 3 and KNbO 3 ceramics were sintered by spark plasma sintering …
M Bah, R Podor, R Retoux, F Delorme, K Nadaud… - Small, 2022 - Wiley Online Library
Sintering is a very important process in materials science and technological applications. Despite breakthroughs in achieving optimized piezoelectric properties, fundamentals of K0 …
To replace lead containing (Pb, Zr) TiO 3 in piezoelectric devices, the (K, Na) NbO 3 system has shown great promise but has also encountered versatile properties, due to the …