@article{Wang2026, 
author = {Jiankun Wang and Lin Chen and Jing Feng},
title = {Multidimensional structural design of pioneer oxide ceramics with melting points above 3000 °C},
year = {2026},
journal = {Journal of Advanced Ceramics},
volume = {15},
number = {1},
pages = {9221226},
keywords = {research paradigm, oxide ceramics, ultrahigh melting temperature, thermal protective materials},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221226},
doi = {10.26599/JAC.2025.9221226},
abstract = {Thermal protective materials that remain stable above 3000 °C are crucial for hypersonic vehicles and nuclear fusion systems, yet reported nonradioactive oxides melt below this threshold. Zhou et al. demonstrated a cation engineering strategy that couples crystallographic symmetry, the coordination number, the valence electron concentration (VEC), the cation radius, and metal‒oxygen bonding to increase the melting temperature of fluorite-type oxides. Guided by the above multidimensional design framework, Ta-doped HfO2 was experimentally validated to have a melting point surpassing 3000 °C, which was confirmed as the first nonradioactive oxide with a melting point above 3000 °C. This perspective distills the underlying symmetry–VEC–bonding design principles and discusses how they can guide the discovery and engineering integration of ultrahigh-temperature oxide ceramics.}
}