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Surface analyses of amorphous aluminum oxides with AlO6 clusters

Published online by Cambridge University Press:  10 November 2020

Mikio Fukuhara ,
Tomoyuki Kuroda ,
Fumihiko Hasegawa ,
Toshiyuki Hashida ,
Hotaka Yagyu ,
Kazuya Konno ,
Masahiko Nishijima  and
Eunsang Kwon
Mikio Fukuhara*
Affiliation:
New Industry Creation Hatchery Centre, Tohoku University, Aoba, Sendai980-8579, Japan
Tomoyuki Kuroda
Affiliation:
New Industry Creation Hatchery Centre, Tohoku University, Aoba, Sendai980-8579, Japan
Fumihiko Hasegawa
Affiliation:
New Industry Creation Hatchery Centre, Tohoku University, Aoba, Sendai980-8579, Japan
Toshiyuki Hashida
Affiliation:
Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University, Sendai980-8579, Japan
Hotaka Yagyu
Affiliation:
National Institute of Technology, Sendai College, Natori981-1239, Japan
Kazuya Konno
Affiliation:
National Institute of Technology, Sendai College, Natori981-1239, Japan
Masahiko Nishijima
Affiliation:
The Electron Microscopy Center, Tohoku University, Aoba, Sendai980-8577, Japan
Eunsang Kwon
Affiliation:
Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai980-8578, Japan
*
Address all correspondence to Mikio Fukuhara at [email protected]
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Abstract

An amorphous aluminum oxide supercapacitor can store a large amount of electric storge on the uneven surfaces with AlO6 clusters. The amount of stored electricity increases with decreasing convex diameter d and depth of valley h. The nondestructive detection of AlO6 clusters on a surface with (Al0.91Y0.09)O1.66 oxide layer at a depth of 0.5 μm was determined based on a 3505 cm−1 peak band in the Fourier transform-infrared (FT-IR) spectrum and one 1047 cm−1 peak in the microRaman spectrum. The discharging time (T) could be expressed as T = 1.388 × 100.019 I. Thus, we can evaluate the amount of electricity by the nondestructive detection methods such as FT-IR and the microRaman spectra.

Type
Research Letters
Information
MRS Communications , Volume 10 , Issue 4 , December 2020 , pp. 674 - 679
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Copyright
Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press

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