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- W2969274408 abstract "Abstract Bi2Sr2−xKxCo2Oy (x = 0.0, 0.025, 0.050, 0.075, 0.100, 0.125, and 0.15) ceramic materials have been fabricated using a classical ceramic process, followed by texturing through directional solidification. SEM analysis of samples, before and after annealing has shown that grains were aligned along the growth direction. While as-grown samples have several phases, besides the thermoelectric one, the annealed ones show much higher thermoelectric phase content. In addition, K-substitution increases the thermoelectric phase content and enhances grain orientation. These improvements decrease the electrical resistivity without significant changes in Seebeck coefficient. The maximum power factor value for 0.10K-substituted annealed samples has been found as 0.20 mW/K2 m. This is superior to the highest reported for hot-pressed materials. However, all samples have similar magnetic properties." @default.
- W2969274408 created "2019-08-29" @default.
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- W2969274408 date "2020-05-01" @default.
- W2969274408 modified "2023-10-10" @default.
- W2969274408 title "Effect of annealing and potassium substitution on the thermoelectric and magnetic properties of directionally grown Bi2Sr2Co2O ceramics" @default.
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- W2969274408 doi "https://doi.org/10.1016/j.bsecv.2019.08.004" @default.
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