Surface analyses of amorphous aluminum oxides with AlO 6 clusters

Mikio Fukuhara, Tomoyuki Kuroda, Fumihiko Hasegawa, Toshiyuki Hashida, Hotaka Yagyu, Kazuya Konno, Masahiko Nishijima, Eunsang Kwon

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)674-679
Number of pages6
JournalMRS Communications
Issue number4
Publication statusPublished - 2020 Dec

ASJC Scopus subject areas

  • Materials Science(all)


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