Erratum: ‘‘Growth and characterization of reactively sputtered thin-film platinum oxides’’ [J. Appl. Phys. 69, 1596 (1991)]

Comprehensive study of the growth of thin oxide layers on Pt electrodes under well-defined temperature, potential, and time conditions

“…Knowledge of these values is essential in order to determine (i) kinetic parameters that drive the oxide formation when the process is determined by the rate of escape of Pt 2+ from the metal into the oxide, and (ii) electric field across the growing oxide [32]. In the theoretical data that we present in this paper, we adopt the published XRD data and determine that a Pt 2þ ÀPt 2þ ¼ 3:078Å and a 0 PtÀPt 2þ ¼ 3:444Å [38].…”

“…The structure and parameters of the electrochemically formed Pt oxide were determined using X-ray diffraction (XRD) and surface X-ray scattering (SXS) [38,39]. The XRD data allow us to calculate the distance between two Pt 2+ cations in the oxide ða Pt 2þ ÀPt 2þ Þ as well as the distance between the Pt atom in the top-most metal layer and Pt 2+ cation in the first oxide monolayer ða 0 PtÀPt 2þ Þ.…”

“…The surface dipole moment, l, can be readily calculated from the slope of the q ox vs. logt p plots that equals to 1.151 dRTFe o /N 2 A b l 2 . The conversion of the oxide charge density, q ox , to the oxide thickness, d, was accomplished bearing in mind that the charge density of formation of 1 ML of PtO is 440 lC cm À2 [35] and its thickness is 3.444 Å [38]. Since the Pt-O bond length is constant in this temperature range, the surface dipole moment is independent of T. We determined that the values of l are consistently 1.30 ± 0.1 D and independent of E p .…”

Structure and Reactivity of Surface Oxides on Pt(110) during Catalytic CO Oxidation

“…The unit mesh of the nearly hexagonal Pt layer was very close to that of -PtO 2 (see Fig. 1), suggesting that the overlayer was a distorted PtO 2 layer, azimuthally aligned with the substrate, and oriented with its c axis parallel to the surface normal [16]. Relative to the bulk lattice of -PtO 2 our surface oxide exhibited compressive strain of 3.4% along the 1 10 direction and tensile strain of 2.4% along the 001 direction.…”

Thermally-induced optical property changes of sputtered PdOx films

“…Noble metal oxides decompose to metals and oxygen at high temperatures showing the large structural and optical changes [1][2][3][4][5][6][7][8][9][10]. Since the thermal decomposition of noble metal oxides has a specific threshold temperature, an optical disk storage system using the decomposition phenomena of silver oxide (AgO x ) thin films induced by laser heating has been proposed [11,12].…”