Presentation 1998/7/23
Evaluation of tailored perovskite electrode for(Ba, Sr)TiO_3
Dyun-Kyun Choi, Se-Guen Park, Boum Seock Kim, Sung-Sik Park,
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Abstract(in English) Electrical properties of(Ba, Sr)TiO_3 thin films were investigated in terms of the microstructure and composition of the perovskite (Sr, Ca)RuO_3 bottom electrode. SCR electrode led to the leakage current density(10^<-7>A/cm^2)of BST films about an order lower than that on RuO_2.The leakage current was not sensitive to the composition of SCR electrodes, while the dielectric constant of BST/SCR thin film capacitor ranged from 160 to 280 depending on the Sr/Ca ratio in SCR electrodes.The BST/SCR system resulted in a 5-nm-thick interfacial layer which is about a half of that in BST/Pt.Furthermore, that interfacial layer turned out to be partially crystallized from the lattice image taken by HRTEM.Therefore, the enhancement in electrical properties of BST films is from the improvement of interfacial characteristics originated from the structural matching.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) (Ba, Sr)TiO_3 / (Sr, Ca)RuO_3 / leakage current / dielectric constant / interfacial characteristics
Paper # SDM98-90,ICD98-89
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Conference Date 1998/7/23(1days)
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Language KOR
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation of tailored perovskite electrode for(Ba, Sr)TiO_3
Sub Title (in English)
Keyword(1) (Ba, Sr)TiO_3
Keyword(2) (Sr, Ca)RuO_3
Keyword(3) leakage current
Keyword(4) dielectric constant
Keyword(5) interfacial characteristics
1st Author's Name Dyun-Kyun Choi
1st Author's Affiliation Department of Inorganic Materials Engineering, Hanyang University()
2nd Author's Name Se-Guen Park
2nd Author's Affiliation School of Electrical and Computer Engineering, Inha University Department of Inorganic Materials Engineering, Hanyang University,
3rd Author's Name Boum Seock Kim
3rd Author's Affiliation Department of Inorganic Materials Engineering, Hanyang University
4th Author's Name Sung-Sik Park
4th Author's Affiliation Department of Inorganic Materials Engineering, Hanyang University
Date 1998/7/23
Paper # SDM98-90,ICD98-89
Volume (vol) vol.98
Number (no) 195
Page pp.pp.-
#Pages 5
Date of Issue