Presentation 1999/7/23
Dependence of Switching Characteristics on Fabrication Process and Capacitor Size for Pt/SBT/Pt Ferroelectric Capacitor
Woo Seok Yang, Seung Jin Yeom, Nam Kyeng Kim, Yong Sik Yu, Shang Kyoo Lee, Chung Tae Kim,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Effects of fabrication process and capacitor size on the switching characteristics were investigated for Pt/SrBi_2Ta_2O_9 (SBT)/Pt capacitors. The switchable polarization (P^*-P^∧) and its saturation characteristic with operation voltage were degraded by the damage during capacitor etching, intermediate level dielectric (ILD) formation, and contact-hole etching. They were also degraded with decreasing capacitor size, because of the greater damage for the smaller capacitor. By optimization of fabrication process such as use of capacitor level dielectric (CLD) under ILD and proper recovery annealing, the damage could be sufficiently minimized, then the switchable polarization and its saturation characteristic were independent on capacitor size in the range from 100×100 to 1.4×1.4 μm^2.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Nonvolatile memory / Ferroelectric capacitor / SrBi_2Ta_2O_9 (SBT) / capacitor size / switchable polarization / saturation
Paper # ICD99-124
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Conference Date 1999/7/23(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Dependence of Switching Characteristics on Fabrication Process and Capacitor Size for Pt/SBT/Pt Ferroelectric Capacitor
Sub Title (in English)
Keyword(1) Nonvolatile memory
Keyword(2) Ferroelectric capacitor
Keyword(3) SrBi_2Ta_2O_9 (SBT)
Keyword(4) capacitor size
Keyword(5) switchable polarization
Keyword(6) saturation
1st Author's Name Woo Seok Yang
1st Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.()
2nd Author's Name Seung Jin Yeom
2nd Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.
3rd Author's Name Nam Kyeng Kim
3rd Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.
4th Author's Name Yong Sik Yu
4th Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.
5th Author's Name Shang Kyoo Lee
5th Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.
6th Author's Name Chung Tae Kim
6th Author's Affiliation Memory Research and Development Division, Hyundai Electronics Industries Co., Ltd.
Date 1999/7/23
Paper # ICD99-124
Volume (vol) vol.99
Number (no) 234
Page pp.pp.-
#Pages 5
Date of Issue