Thermal expansion and heat capacity of Sm 2 ScTaO 7 – A promising material for thermal barrier coatings

The experimental results presented for Sm 2 ScTaO 7 pyrochlore in this study, temperature dependence of heat capacity and retaining the pyrochlore structure with the temperature variation, as well as the constant value of the thermal expansion coefficient in a wide temperature range, can be considered as evidences for the absence of a previously reported phase transition in the high‐temperature region for this compound. This means that Sm 2 ScTaO 7 pyrochlore is no doubt a promising material for thermal barrier coatings.