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EnglishThe structural and chemical evolution of propionate based low fluorine YBa2Cu3O7 − δ (YBCO) precursor during the conversion thermal treatment to obtain superconducting film has been investigated by both x-ray photoelectron and diffraction techniques in a set of partially converted films on SrTiO3 single crystals. The pyrolysis temperature within the range 400–480 °C mainly affects the copper valence state with an increase of the Cu2 + fraction with temperature with respect to the Cu1 + oxidation state. During the subsequent thermal treatment up to 700 °C, the reduction of fluorine content is mainly ascribed to the hydrolysis of YF3. At higher temperatures, Ba hydrolysis, Y2Cu2O5 and YBCO phase formation (nucleation at 700 °C and 725 °C, respectively) have been observed. The temperature dependences of the formation and decomposition of YBCO, Y2Cu2O5 and Ba-oxyfluoride were evaluated by x-ray diffraction measurements. The reaction path emerging from these analyses agrees with the one observed for YBCO films obtained with the standard MOD method based on metal tri-fluoroacetate precursors.
Angrisani Armenio, A., Augieri A, , C., . Contini, G., Davoli, I., Di Giovannantonio, M., et al. (2011). Structuraln and Chemical Evolution of Propionate based Metal-organic Precursor for Superconducting YBa2Cu3O7-d Epitaxial film growth. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 24(11), 115008.
| Tipologia: | Articolo su rivista | |
| Citazione: | Angrisani Armenio, A., Augieri A, , C., . Contini, G., Davoli, I., Di Giovannantonio, M., et al. (2011). Structuraln and Chemical Evolution of Propionate based Metal-organic Precursor for Superconducting YBa2Cu3O7-d Epitaxial film growth. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 24(11), 115008. | |
| IF: | Con Impact Factor ISI | |
| Lingua: | English | |
| Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia | |
| Revisione (peer review): | Esperti anonimi | |
| Tipo: | Articolo | |
| Rilevanza: | Rilevanza internazionale | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/0953-2048/24/11/115008 | |
| Stato di pubblicazione: | Pubblicato | |
| Data di pubblicazione: | 7-ott-2011 | |
| Titolo: | Structuraln and Chemical Evolution of Propionate based Metal-organic Precursor for Superconducting YBa2Cu3O7-d Epitaxial film growth | |
| Autori: | ||
| Autori: | Angrisani Armenio, A; Augieri A;, Ciontea, L;. Contini, G; Davoli, I; Di Giovannantonio, M; Galluzzi, V; Mancini, A; Rufoloni, A; Petrisor, T; Vannozzi A;, Celentano, G | |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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