Abstract
A novel (Nd0.2Sm0.2Eu0.2La0.2Dy0.2)2Gd0.5Yb0.5TaO7 high-entropy oxide was successfully prepared through the sol–gel and high-sintering technique. The synthesized powder has a single-lattice structure, and the bulk sample has sole pyrochlore-type lattice. Given the particularity structure and the high concentration of oxygen vacancies caused by ion doping, the (Nd0.2Sm0.2Eu0.2La0.2Dy0.2)2Gd0.5Yb0.5TaO7's thermal conductivity (1.385–1.187W·m−1·K−1) is lower than those of (La1/6Nd1/6Yb1/6Y1/6Sm1/6Lu1/6)2Ce2O7, Sm2Zr2O7, and Sm2Ce2O7. Its excellent phase stability and suitable coefficient of thermal expansion (～10.80 × 10−6 K−1, ～1200 °C) also indicate its potential as candidate oxide for thermal barrier coatings.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
