Dead layer thickness estimation at the ferroelectric film-metal interface in PZT

Different models for estimation of the dead layer thickness at the ferroelectric film-metal interface are discussed, including the small-signal capacitance model and two methods based on dielectric hysteresis analysis—one based on slopes of the hysteresis loops at the coercive field and the other me...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2019-04, Vol.114 (13)
Main Authors: Podgorny, Yu. V., Vorotilov, K. A., Sigov, A. S., Scott, J. F.
Format: Article
Language:English
Subjects:
Applied physics
Capacitance
Coercivity
Ferroelectric materials
Ferroelectricity
Hysteresis loops
Lead zirconate titanates
Rapid prototyping
Thickness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Different models for estimation of the dead layer thickness at the ferroelectric film-metal interface are discussed, including the small-signal capacitance model and two methods based on dielectric hysteresis analysis—one based on slopes of the hysteresis loops at the coercive field and the other method based on comparison of dielectric hysteresis portraits. It is shown that the latter technique yields more reliable data as it excludes the effect of leakage and relaxation loss. Conductivity may have a pronounced effect on the validity of dead-layer thickness data. This work relates peripherally to negative capacitance in ferroelectric films and to lozenge-shaped hysteresis curves.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5084019