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Author Kobayashi, Naritaka ♦ Kawamura, Ryuzo ♦ Yoshikawa, Hiroshi Y. ♦ Nakabayashi, Seiichiro
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ADSORPTION ♦ ATOMIC FORCE MICROSCOPY ♦ BARIUM COMPLEXES ♦ BARIUM FLUORIDES ♦ CRYSTAL GROWTH ♦ CRYSTALS ♦ FREQUENCY MODULATION ♦ IMAGES ♦ LIQUIDS ♦ NANOSTRUCTURES ♦ PH VALUE ♦ POTASSIUM FLUORIDES ♦ PROTONS ♦ RESOLUTION ♦ SUPERSATURATION ♦ SURFACES ♦ THREE-DIMENSIONAL CALCULATIONS ♦ TWO-DIMENSIONAL CALCULATIONS
Abstract In this study, we have directly observed nanoscale processes that occur on BaF{sub 2}(111) surfaces in various solutions using liquid-environment frequency modulation atomic force microscopy (FM-AFM) with a true atomic resolution. In addition, to investigate atomic-scale mechanisms of crystal growth process of BaF{sub 2}, we determined a suitable solution for atomic-resolution FM-AFM imaging of the BaF{sub 2}(111) surface. For undersaturated solutions, the surface is roughened by barium hydroxo complexes in the case of high pH, whereas by dissolution and proton or water molecule adsorption throughout the surface in the case of low pH. On the other hand, for supersaturated solutions, the surface shows two-dimensional nucleation and growth (σ = 0.1) and three-dimensional crystal growth with tetrahedral structures (σ = 1), where σ is the degree of supersaturation. The atomic-resolution imaging of the BaF{sub 2}(111) surface has been demonstrated in potassium fluoride (KF) and the supersaturated (σ = 0.1 and 1) solutions, wherein atomically flat terraces are shown at least for about 30 min.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-06-07
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 119
Issue Number 21


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