Issue 29, 2016

Two-step polarization switching mediated by a nonpolar intermediate phase in Hf0.4Zr0.6O2 thin films

Abstract

The broken ferroelectric hysteresis loop achieved from a Hf0.4Zr0.6O2 film was interpreted based on the first order phase transition theory. The two-step polarization switching, which was expected from the theory, could be observed by dynamic pulse switching measurement. The variations in the interfacial capacitance values along with switching time and number of switching cycles could also be estimated from the pulse switching test. Being different from the one-step polarization switching in other ferroelectric films, two-step polarization switching produced two slanted plateau regions where the estimated interfacial capacitance values were different from each other. This could be understood based on the quantitative model of the two-step polarization switching with the involvement of an intermediate nonpolar phase. The Hf0.4Zr0.6O2 film was changed from antiferroelectric-like to ferroelectric-like with the increasing number of electric field cycles, which could be induced by the field driven phase change.

Graphical abstract: Two-step polarization switching mediated by a nonpolar intermediate phase in Hf0.4Zr0.6O2 thin films

Article information

Article type
Paper
Submitted
25 नवम्बर 2015
Accepted
14 दिसम्बर 2015
First published
15 दिसम्बर 2015

Nanoscale, 2016,8, 13898-13907

Two-step polarization switching mediated by a nonpolar intermediate phase in Hf0.4Zr0.6O2 thin films

M. H. Park, H. J. Kim, Y. H. Lee, Y. J. Kim, T. Moon, K. D. Kim, S. D. Hyun and C. S. Hwang, Nanoscale, 2016, 8, 13898 DOI: 10.1039/C5NR08346J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements