Publications by authors named "Raluca Tofan"
Article Synopsis
- An all-oxide thermoelectric generator relies on a low electrical resistance at the p-n junction formed by p-type CaCoO and n-type CaMnO.
- Heat treatment at 900 °C for 10 hours leads to counter diffusion of cations and the formation of a CaCoMnO interlayer, as well as precipitation of Co-oxides.
- Density functional theory calculations confirm the variability of the Co/Mn ratio in the interlayer and suggest a homogeneity range for CaCoMnO with a low mixing energy.
Thermoelectric application of half-Heusler compounds suffers from their fairly high thermal conductivities. Insight into how effective various scattering mechanisms are in reducing the thermal conductivity of fabricated XNiSn compounds (X = Hf, Zr, Ti, and mixtures thereof) is therefore crucial. Here, we show that such insight can be obtained through a concerted theory-experiment comparison of how the lattice thermal conductivity κ (T) depends on temperature and crystallite size.
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