Memory characteristics of multi-stacked thin films using La 2O3 and LaAlO3 as charge trap layer

Hyo June Kim; Doo Jin Choi

doi:10.1016/j.ceramint.2010.10.010

Memory characteristics of multi-stacked thin films using La ₂O₃ and LaAlO₃ as charge trap layer

Hyo June Kim, Doo Jin Choi

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Al₂O₃/La₂O₃/Al ₂O₃ (ALA) and Al₂O₃/LaAlO ₃/Al₂O₃ (A/LAO/A) multi-stacked films were deposited on Si substrates by MOCVD. No interfacial layers (Al _xSi_yO_z) were observed in TEM images, and the thickness ratio of the tunnel oxide (bottom oxide), trap layer (middle oxide), and blocking oxide (top oxide) was about (1:1.3:3) in both films. Memory windows of the (ALA) and (A/LAO/A) films were 1.31 V and 3.13 V, respectively. Each value in the program/erase cycle test was maintained for up to 10⁴ cycles.

Original language	English
Pages (from-to)	1127-1131
Number of pages	5
Journal	Ceramics International
Volume	37
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2010.10.010
Publication status	Published - 2011 Apr 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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Kim, H. J., & Choi, D. J. (2011). Memory characteristics of multi-stacked thin films using La ₂O₃ and LaAlO₃ as charge trap layer. Ceramics International, 37(3), 1127-1131. https://doi.org/10.1016/j.ceramint.2010.10.010

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abstract = "Al2O3/La2O3/Al 2O3 (ALA) and Al2O3/LaAlO 3/Al2O3 (A/LAO/A) multi-stacked films were deposited on Si substrates by MOCVD. No interfacial layers (Al xSiyOz) were observed in TEM images, and the thickness ratio of the tunnel oxide (bottom oxide), trap layer (middle oxide), and blocking oxide (top oxide) was about (1:1.3:3) in both films. Memory windows of the (ALA) and (A/LAO/A) films were 1.31 V and 3.13 V, respectively. Each value in the program/erase cycle test was maintained for up to 104 cycles.",

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