The deposition and characterization of La2Zr2O7 thin films deposited by metal-organic decomposition method on both single crystal SrTiO3 and cube textured Ni-5 at.% W substrates are presented. Metal acetylacetonates in propionic acid solution was used. The results showed that LZO films are epitaxially grown with smooth surface with rms roughness around 2 nm. YBa2Cu3O7-delta films, deposited by pulsed laser deposition technique on LZO buffer layers, showed critical temperature of 90 K and critical current density in self magnetic field J(c) = 1.6 and 13 MA/cm(2) at 77 K and 4.2 K, respectively. A better J(c) retention in magnetic field for YBCO films deposited on LZO/STO than YBCO on bare STO is observed indicating a rather strong vortex pinning as confirmed by microwave measurements. (C) 1012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors.
Angrisani A., A., Augieri, A., Fabbri, F., Freda, R., Galluzzi, V., Mancini, A., et al. (2012). Growth and Characterization of La2Zr2O7 Buffer Layers Deposited by Chemical Solution Deposition (Superconductivity Centennial Conference). In Proceedings of Superconductivity Centennial Conference (SCC) (pp.1552-1557) [10.1016/j.phpro.2012.06.209].
Growth and Characterization of La2Zr2O7 Buffer Layers Deposited by Chemical Solution Deposition (Superconductivity Centennial Conference)
SOTGIU, Giovanni;POMPEO, NICOLA;TOROKHTII, KOSTIANTYN;SILVA, Enrico;BEMPORAD, Edoardo;
2012-01-01
Abstract
The deposition and characterization of La2Zr2O7 thin films deposited by metal-organic decomposition method on both single crystal SrTiO3 and cube textured Ni-5 at.% W substrates are presented. Metal acetylacetonates in propionic acid solution was used. The results showed that LZO films are epitaxially grown with smooth surface with rms roughness around 2 nm. YBa2Cu3O7-delta films, deposited by pulsed laser deposition technique on LZO buffer layers, showed critical temperature of 90 K and critical current density in self magnetic field J(c) = 1.6 and 13 MA/cm(2) at 77 K and 4.2 K, respectively. A better J(c) retention in magnetic field for YBCO films deposited on LZO/STO than YBCO on bare STO is observed indicating a rather strong vortex pinning as confirmed by microwave measurements. (C) 1012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
