16:15 〜 16:30 ▼ [22p-A307-11] Demonstration of Ferroelectricity of 10 nm YHO7 Thin Film through Piezoelectric Force Microscopy 〇(D)ZHONGZHENG SUN1、Shurong Miao1、Hiroshi Funakubo1、Yutaka Majima1 (1.Tokyo Tech)