Nature CommunicationsA stable monoclinic variant and resultant robust ferroelectricity in single-crystalline hafnia-based filmsWan-Rong GengYu-Jia WangYin-Lian ZhuSirui ZhangHuiqin MaYun-Long TangShi TuoXiu-Liang Ma2025-10-03Full textDOI https://doi.org/10.1038/s41467-025-63907-z