Dynamic analysis of non-linear wake-up behavior in Hf0.7Zr0.3O2 thin film

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Dynamic analysis of non-linear wake-up behavior in Hf0.7Zr0.3O2 thin film
Author
Choi, J. C.Song, M. S.Lee, K.Park, K.Park, J.Lee, H.Lee, Jun HeeChae, S. C.
Issue Date
2020-06
Publisher
ELSEVIER
Citation
CURRENT APPLIED PHYSICS, v.20, no.6, pp.746 - 750
Abstract
We report on the nonlinear wake-up behavior against the external electric field cycling in the ferroelectric Hf0.7Zr0.3O2 thin film. Two distinct scaling regimes during the increase of the remnant polarization with different activation energies were observed in TiN/Hf0.7Zr0.3O2/TiN cells. The transmission electron microscopy revealed the structural phase transition from the monoclinic structure to the orthorhombic structure of the Hf0.7Zr0.3O2 film after the wake-up behavior. During the phase change, as the remnant polarization enhanced, the dielectric constant of the Hf0.7Zr0.3O2 film increased with the external field cycling. The temperature dependence of the wake-up behavior revealed that each estimated activation energies for the early and later enhancement of the remnant polarization are 1.12 eV and 0.73 eV, respectively. First principle calculations show that the oxygen vacancies can reduce the activation energy barrier for the structural phase transition.
URI
https://scholarworks.unist.ac.kr/handle/201301/32141
URL
https://www.sciencedirect.com/science/article/pii/S1567173920300663?via%3Dihub
DOI
10.1016/j.cap.2020.03.012
ISSN
1567-1739
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU