Abstract
A single LaMnO3 buffer layer was developed for the growth of superconducting thick YBa2Cu3O7−δ (YBCO) films on polycrystalline Ni-alloy substrates where a biaxially textured MgO layer, produced by ion-beam assisted deposition (IBAD), was used as a template. Using pulsed laser deposition, a 1.65-μm-thick YBCO film with a critical current density of 1.4 × 106 A/cm2 in self field at 75 K was achieved on sputtered LaMnO3-buffered IBAD MgO substrates. This corresponds to a critical current (Ic) of 231 A/cm-width. This result demonstrates the possibility of using both LaMnO3 buffer and IBAD MgO template for producing high current density YBCO-coated conductors.
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Paranthaman, M., Aytug, T., Christen, D.K. et al. Growth of thick Yba2Cu3O7−δ films carrying a critical current of over 230 A/cm on single LaMnO3-buffered ion-beam assisted deposition MgO substrates. Journal of Materials Research 18, 2055–2059 (2003). https://doi.org/10.1557/JMR.2003.0289
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DOI: https://doi.org/10.1557/JMR.2003.0289