講演情報
[24p-12G-10]Ultrathin Freestanding Membranes of Ferroelectric Hafnia
〇Yufan Shen1, Kousuke Ooe2, Tomoaki Yamada3,4, Shunsuke Kobayashi2, Mitsutaka Haruta1, Yuichi Shimakawa1 (1.Kyoto Univ. ICR, 2.JFCC, 3.Nagoya Univ, 4.Tokyo Tech. MDXES)
キーワード：
ferroelectric、hafnia、freestanding membrane
Two-dimensional freestanding membranes, which are free of external factors like substrate-induced effects, have been regarded as a promising platform for scientific research and device development. Freestanding membranes of materials usually display their bulk-equivalent properties and crystal structures due to the loss of external factors, while freestanding membranes of materials in metastable phases and their physical properties have not been explored yet. In this presentation, we show that freestanding membranes of Zr-substituted hafnia (Hf0.5Zr0.5)O2 (HZO) can sustain its metastable structure and ferroelectricity in the monolayer limit.