ferroelectric phase
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Author(s):  
Zheng Tang ◽  
Xiaofan Sun ◽  
Zhangran Gao ◽  
Dong Li ◽  
Shulin Jiao ◽  
...  

Organic-inorganic hybrid ferroelectric Tris(2-Hydroxyethyl) ammonium trichloro cadmium(Ⅱ) (TATC) with a space group of P21/c at room temperature was obtained in aqueous solution. There goes a paraelectric-ferroelectric phase transition (from monoclinic...


2022 ◽  
pp. 122886
Author(s):  
Imen Gharbi ◽  
Abderrazek Oueslati ◽  
Mohamed Houcine Dhaou ◽  
Mohamed Gargouri

Author(s):  
Kazuto Mizutani ◽  
Takuya HOSHII ◽  
Hitoshi WAKABAYASHI ◽  
Kazuo TSUTSUI ◽  
Edward Yi Chang ◽  
...  

Abstract The effects of 1-nm-thick CeOx capping on 7.5-nm-thick Y-doped HfO2 films on the ferroelectric characteristics are investigated. From the ferroelectric characteristics of the samples annealed at different temperatures from 450 to 600oC and annealing durations, the time (τ) required to stabilize the ferroelectric phase at each temperature was shortened by the capping. The identical activation energy (Ea) of 2.65 eV for ferroelectric stabilization without and with capping suggests the same kinetics for phase transformation. However, an increase in the remnant polarization (Pr) was obtained. Only a few Ce atoms diffused into the underlying HfO2 film even after 600oC annealing. Ferroelectric switching tests revealed an improvement in endurance from 107 to 1010 by the capping, presumably owing to the suppression of conductive filament formation. Therefore, CeOx capping is effective in promoting the ferroelectric phase in HfO2 with high switching endurance.


2021 ◽  
Vol 130 (23) ◽  
pp. 234101
Author(s):  
Lucas Lemos da Silva ◽  
Kai-Yang Lee ◽  
Simon Petrick ◽  
Martin Etter ◽  
Alexander Schökel ◽  
...  

2021 ◽  
Vol 90 (12) ◽  
Author(s):  
Tsukasa Katsuyoshi ◽  
Kenta Kimura ◽  
Zhuo Yang ◽  
Yasuyuki Kato ◽  
Shojiro Kimura ◽  
...  

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