scholarly journals Independence of surface morphology and reconstruction during the thermal preparation of perovskite oxide surfaces

2018 ◽  
Vol 112 (11) ◽  
pp. 111601 ◽  
Author(s):  
Maren Jäger ◽  
Ali Teker ◽  
Jochen Mannhart ◽  
Wolfgang Braun
Keyword(s):  
Surface Morphology ◽  
Perovskite Oxide ◽  
Oxide Surfaces ◽  
Thermal Preparation

scholarly journals Determining the energetics of vicinal perovskite oxide surfaces

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 055302 ◽  
Author(s):  
Werner A. Wessels ◽  
Tjeerd R. J. Bollmann ◽  
Gertjan Koster ◽  
Harold J. W. Zandvliet ◽  
Guus Rijnders
Keyword(s):  
Perovskite Oxide ◽  
Oxide Surfaces

Engineering of Charged Defects at Perovskite Oxide Surfaces for Exceptionally Stable Solid Oxide Fuel Cell Electrodes

2020 ◽  
Vol 12 (19) ◽  
pp. 21494-21504 ◽  
Author(s):  
Mingi Choi ◽  
Ismail A. M. Ibrahim ◽  
Kyeounghak Kim ◽  
Ja Yang Koo ◽  
Seo Ju Kim ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Perovskite Oxide ◽  
Oxide Surfaces ◽  
Oxide Fuel ◽  
Fuel Cell Electrodes ◽  
Charged Defects

scholarly journals Quasiparticle Interference on Cubic Perovskite Oxide Surfaces

2017 ◽  
Vol 119 (8) ◽  
Author(s):  
Yoshinori Okada ◽  
Shiue-Yuan Shiau ◽  
Tay-Rong Chang ◽  
Guoqing Chang ◽  
Masaki Kobayashi ◽  
...  
Keyword(s):  
Perovskite Oxide ◽  
Oxide Surfaces ◽  
Quasiparticle Interference

scholarly journals Self-ordering on vicinal surfaces studied by 3D GISAXS measurements

2014 ◽  
Vol 70 (a1) ◽  
pp. C879-C879
Author(s):  
Caroline Matringe ◽  
Elsa Thune ◽  
René Guinebretière ◽  
David Babonneau
Keyword(s):  
Thermal Treatment ◽  
Surface Morphology ◽  
Azimuthal Angle ◽  
Reciprocal Space ◽  
Ex Situ ◽  
Periodic Lattice ◽  
Oxide Surfaces ◽  
Vicinal Surfaces ◽  
Periodic Patterns ◽  
Self Organized

Nanostructured systems made of islands deposited onto oxide surfaces have both fundamental and technological interests and are used in the field of electronic, linear or non-linear optic, and optoelectronic. The final properties of these systems depend on the shape and the size of nanoparticles and also on their organization. On this general framework, we aim at producing self-organized nanostructures using vicinal surfaces [1],[2]. Vicinal surfaces are obtained by cutting a single crystal with a small deviation of the surface normal with respect to a crystallographic plane leading to a surface with terraces separated by steps. Suitable templates for the growth of self-organized nanostructures are created thanks to the re-arrangement of the steps during thermal treatment (step bunching). Different types of nanostructured surfaces can be elaborated and used as templates since the substrates exhibit a one-dimensional (1D) or two-dimensional (2D) periodic patterns (fig. 1a). The surface morphology and the periodicity can be tuned with the thermal treatment parameters (i.e. annealing time, temperature and atmosphere) and also with the sample parameters (i.e. miscut and azimuthal angles). Ordered stepped oxide surfaces are characterized ex-situ after each treatment on a laboratory scale by Atomic Force Microscopy (AFM), which provide a direct image of the surface morphology (step height, step curvature, terrace width...) over a small probed area (a few µm2). Quantitative analysis of the surface morphology has been studied by grazing incidence small angle scattering using a specific set-up implemented recently onto the BM02 beamline at ESRF (Grenoble, France). Prior to the SAXS measurements, the samples were strictly oriented according to the primary beam direction using a 3-axis sample holder. 3D reciprocal space maps around the (000) node were then recorded onto a 2D pixel detector through 3600rotation of the samples around the azimuthal angle. Modelling of 2D sections of the (000) reciprocal space node were realized using the FitGISAXS software [3]. Typical experimental and calculated maps are reported fig. 1b and 1c. We demonstrate that the 2D ordered surface is consistent with a rectangular centred periodic lattice decorated by truncated tetrahedrons (see fig. 1d).

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