Atomic force microscopic observation of SrTiO3 polar surface

S. Sekiguchi, M. Fujimoto, M. Nomura, Sung Baek Cho, J. Tanaka, T. Nishihara, Min Gu Kang, Hyung-Ho Park

Research output: Contribution to journalArticle

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Abstract

The structure change of SrTiO3 (111) polar surface was studied as a function of atmosphere. Atomic force microscopy (AFM) and coaxitial impact-collision ion-scattering spectroscopy (CAICISS) were used to study the surface structure of the (111) polar surfaces of SrTiO3 single crystals. From the result of AFM observation, the polar surfaces annealed in oxygen gas had a trench structure, and that annealed in argon gas formed large triangular terraces. The surface annealed in air, i.e. in intermediate oxygen partial pressure, consisted of complicated self-similar triangles with different sizes, forming a fractal shape called Sierpinski's gasket. The time of flight spectra of CAICISS suggested that a Ti4+ plane was more stable than a SrO4-3 plane on the substrate surface annealed in oxygen gas, and the Ti4+ and SrO4-3 planes almost equally existed on the substrate surface annealed in argon gas. Molecular dynamic calculations at constant temperature and pressure were applied for various SrTiO3 (111) polar surfaces.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalSolid State Ionics
Volume108
Issue number1-4
Publication statusPublished - 1998 May 1

Fingerprint

Gases
Argon
Oxygen
ion scattering
gases
Atomic force microscopy
Spectroscopy
Scattering
Ions
oxygen
argon
atomic force microscopy
Substrates
collisions
strontium titanium oxide
Surface structure
Fractals
Partial pressure
Molecular dynamics
triangles

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Sekiguchi, S., Fujimoto, M., Nomura, M., Cho, S. B., Tanaka, J., Nishihara, T., ... Park, H-H. (1998). Atomic force microscopic observation of SrTiO3 polar surface. Solid State Ionics, 108(1-4), 73-79.
Sekiguchi, S. ; Fujimoto, M. ; Nomura, M. ; Cho, Sung Baek ; Tanaka, J. ; Nishihara, T. ; Kang, Min Gu ; Park, Hyung-Ho. / Atomic force microscopic observation of SrTiO3 polar surface. In: Solid State Ionics. 1998 ; Vol. 108, No. 1-4. pp. 73-79.
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Sekiguchi, S, Fujimoto, M, Nomura, M, Cho, SB, Tanaka, J, Nishihara, T, Kang, MG & Park, H-H 1998, 'Atomic force microscopic observation of SrTiO3 polar surface', Solid State Ionics, vol. 108, no. 1-4, pp. 73-79.

Atomic force microscopic observation of SrTiO3 polar surface. / Sekiguchi, S.; Fujimoto, M.; Nomura, M.; Cho, Sung Baek; Tanaka, J.; Nishihara, T.; Kang, Min Gu; Park, Hyung-Ho.

In: Solid State Ionics, Vol. 108, No. 1-4, 01.05.1998, p. 73-79.

Research output: Contribution to journalArticle

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AU - Kang, Min Gu

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Sekiguchi S, Fujimoto M, Nomura M, Cho SB, Tanaka J, Nishihara T et al. Atomic force microscopic observation of SrTiO3 polar surface. Solid State Ionics. 1998 May 1;108(1-4):73-79.