2021年7月
Anomalous structural distortion - a possible origin for the waking-up of the spontaneous polarization in ferroelectric HfO2
JAPANESE JOURNAL OF APPLIED PHYSICS
- ,
- 巻
- 60
- 号
- 7
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.35848/1347-4065/ac085c
- 出版者・発行元
- IOP PUBLISHING LTD
We report that the waking-up of the spontaneous polarization (P (spon)) in ferroelectric (FE) HfO2 is related to the phase transformation driven by electric field cycling. We found an anomalous distortion, which is defined by the difference between in-plane and out-of-plane interplanar spacing induced in FE-HfO2 thin films. We further investigated and found that there is a relationship between the amount of the P (spon) that was woken up and the amount of distortion. Due to the distinctiveness of an electric field-driven phase transformation, we propose a concept of distortion as a possible origin that determines the waking-up of the P (spon) in FE-HfO2.
- リンク情報
- ID情報
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- DOI : 10.35848/1347-4065/ac085c
- ISSN : 0021-4922
- eISSN : 1347-4065
- Web of Science ID : WOS:000668711000001