Lithium-Intercalated α-In₂Se₃ Phase Transition

Ferroelectricity tunable to vanish

Continuous phase transition from ferroelectric semiconductor to metal via lithium intercalation concentration, accompanied by structural transformation and disappearance of ferroelectricity.

He, Xin · Zhihao, Gong · Wang, Tao · Wang, Baoyu · Liu, Chen · Wang, Ding · Ma, Yinchang · Pu, Feng · Zhang, Chenhui · Hu, Weijin · Liu, Kai · Wang, Hua · Zhang, Xixiang

Advanced Science 2025

Advantages

Transitions from ferroelectric semiconductor to dirty metal and finally to metal

Accompanied by a structural transformation

Ferroelectric hysteresis window progressively narrows and eventually disappears