Depolarization as Driving Force in Antiferroelectric Hafnia and Ferroelectric Wake-Up

• Published in: ACS applied electronic materials Vol. 2; no. 6; pp. 1583 - 1595
• Main Authors: Lomenzo, Patrick D, Richter, Claudia, Mikolajick, Thomas, Schroeder, Uwe
• Format: Journal Article
• Language: English
• Published: American Chemical Society 23.06.2020
• Subjects: dead layer; wake-up; size effect; ferroelectric HfO2; antiferroelectricity; depolarization

Antiferroelectricity and wake-up observed in thin hafnium-oxide-based ferroelectrics are examined from the viewpoint of a macroscopic, quantitative model incorporating depolarization effects. Depolarization fields arising from finite screening, a nonferroelectric interface, and a ferroelectric/parae...