Mixed electrochemical-ferroelectric states in nanoscale ferroelectrics
- Authors
- Yang, Sang Mo; Morozovska, Anna N.; Kumar, Rajeev; Eliseev, Eugene A.; Cao, Ye; Mazet, Lucie; Balke, Nina; Jesse, Stephen; Vasudevan, Rama K.; Dubourdieu, Catherine; Kalinin, Sergei V.
- Issue Date
- Aug-2017
- Publisher
- NATURE PUBLISHING GROUP
- Keywords
- ENGL
- Citation
- NATURE PHYSICS, v.13, no.8, pp 812 - 818
- Pages
- 7
- Journal Title
- NATURE PHYSICS
- Volume
- 13
- Number
- 8
- Start Page
- 812
- End Page
- 818
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/8206
- DOI
- 10.1038/NPHYS4103
- ISSN
- 1745-2473
1745-2481
- Abstract
- Ferroelectricity on the nanoscale has been the subject of much fascination in condensed-matter physics for over half a century. In recent years, multiple reports claiming ferroelectricity in ultrathin ferroelectric films based on the formation of remnant polarization states, local electromechanical hysteresis loops, and pressure-induced switching were made. However, similar phenomena were reported for traditionally non-ferroelectric materials, creating a significant level of uncertainty in the field. Here we show that in nanoscale systems the ferroelectric state is fundamentally inseparable from the electrochemical state of the surface, leading to the emergence of a mixed electrochemical-ferroelectric state. We explore the nature, thermodynamics, and thickness evolution of such states, and demonstrate the experimental pathway to establish its presence. This analysis reconciles multiple prior studies, provides guidelines for studies of ferroelectric materials on the nanoscale, and establishes the design paradigm for new generations of ferroelectric-based devices.
- Files in This Item
-
Go to Link
- Appears in
Collections - ICT융합공학부 > 응용물리전공 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.