Crystal structure and electrical properties of Pt/SrBi2Ta2O9/ZrO2/Si

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We have investigated the metal-ferroelectric-insulator-semiconductor (MFIS) structure with strontium bismuth tantalate (SBT) as the ferroelectric thin film and ZrO2 as the insulating buffer layer. Sr0.8Bi2.4Ta2O9 thin films were prepared by using the metalorganic decomposition (MOD) method, and ZrO2 films were deposited using rf-sputtering. The memory windows of the MFIS structure were in the range of 0.3 similar to 2.6 V for gate voltages from 3 to 10 V. The maximum memory window was observed in the MFIS with a 28-nm-thick ZrO2 layer. The auger electron spectroscopy (AES) depth profile and high-resolution transmission electron microscopy of the SBT/ZrO2 (28 nm)/Si structure showed that the ZrO2 thin-film buffer layers prevented both the formation of an interfacial layer and interdiffusion between SET and Si.
Publisher
KOREAN PHYSICAL SOC
Issue Date
2001-07
Language
English
Article Type
Article
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Citation

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.39, no.1, pp.179 - 183

ISSN
0374-4884
URI
http://hdl.handle.net/10203/80021
Appears in Collection
MS-Journal Papers(저널논문)
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