Presentation 2001/6/29
Effects of Bi Content on Electrical Properties of Pt/SrBi_2Nb_2O_9/Si Ferroelectric Gate Structure
Hoon Sang Choi, Jin Shi Zhao, Yong Tae Kim, Kwan Lee, Jong-Han Lee, Seong-Il Kim, In-Hoon Choi,
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Abstract(in English) We have investigated effects of Bi content on electrical properties of SrBi_2Nb_2O_9(SBN) thin films. The SBN films were deposited with co-sputtering method in situ on p-type Si (100) substrates. In order to control the Bi/Sr content ratio, we used SrNb_2O_6 and Bi_2O_3 targets with different powers of RF magnetrons. We have found that electrical properties are strongly sensitive to the Bi content. The memory window gradually increased with increasing the Bi/Sr ratio in the SBN thin films, but when the Bi/Sr ratio was over 3.1 the electrical properties such as memory window and breakdown voltage were degraded. The memory window of the Pt/SBN/Si ferroelectric gate structure with the Bi/Sr ratio of 3.1 was 1.8 V ar applied voltage of 3V. And the leakage current density was 4.74×10^<-8> A/cm^2 at applied voltage of 3V.
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Keyword(in English) SrBi_2Nb_2O_9 / memory window / ferroelectric gate structure
Paper # ED2001-88, SDM2001-95
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Committee ED
Conference Date 2001/6/29(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Effects of Bi Content on Electrical Properties of Pt/SrBi_2Nb_2O_9/Si Ferroelectric Gate Structure
Sub Title (in English)
Keyword(1) SrBi_2Nb_2O_9
Keyword(2) memory window
Keyword(3) ferroelectric gate structure
1st Author's Name Hoon Sang Choi
1st Author's Affiliation Division of Materials Science and Engineering, Korea University()
2nd Author's Name Jin Shi Zhao
2nd Author's Affiliation Division of Materials Science and Engineering, Korea University
3rd Author's Name Yong Tae Kim
3rd Author's Affiliation Semiconductor Device Lab., Korea Institute of Science and Technology
4th Author's Name Kwan Lee
4th Author's Affiliation Division of Materials Science and Engineering, Korea University
5th Author's Name Jong-Han Lee
5th Author's Affiliation Division of Materials Science and Engineering, Korea University
6th Author's Name Seong-Il Kim
6th Author's Affiliation Semiconductor Device Lab., Korea Institute of Science and Technology
7th Author's Name In-Hoon Choi
7th Author's Affiliation Division of Materials Science and Engineering, Korea University
Date 2001/6/29
Paper # ED2001-88, SDM2001-95
Volume (vol) vol.101
Number (no) 161
Page pp.pp.-
#Pages 6
Date of Issue