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Effect of annealing temperature on switching properties in Si-doped HfO2 films

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Author(s)
Park, Sanghyun; Chun, Min Chul; Kim, Min Jin; Lee, Jun Young; Cho, Yongjun; Kim, Cheoljun; Jo, Ji Young; Kang, Bo Soo
Type
Article
Citation
JOURNAL OF APPLIED PHYSICS, v.129, no.16
Issued Date
2021-04
Abstract
The discovery of hafnium oxide-based ferroelectrics has resulted in the pursuit of ferroelectric field-effect transistors with higher scalability, lower power consumption, and enhanced switching speed. An in-depth understanding of ferroelectric polarization switching kinetics is essential for both scientific and technological purposes. Polarization switching is analyzed based on the nucleation-limited switching model with a Lorentzian distribution of logarithmic switching times. The activation field governing the switching kinetics is explained by a dependence on the density of oxygen vacancies, which are caused by various annealing temperatures. This indicates that oxygen vacancies can be a dominant factor in the polarization switching of Si-doped HfO2 films.
Publisher
AIP Publishing
ISSN
0021-8979
DOI
10.1063/5.0039446
URI
https://scholar.gist.ac.kr/handle/local/11549
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