Pulsed laser deposition of epitaxial YBCO/oxide multilayers onto textured metallic substrates for coated conductor applications R.I. Tomov a, * , A. Kursumovic a , D.J. Kang a , B.A. Glowacki a,b , M. Majoros b , J.E. Evetts a , A. Tuissi c , E. Villa c a Department of Materials Science and IRC in Superconductivity, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK b IRC in Superconductivity, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UK c Istituto per la Tecnologia dei Materiali e dei Processi Energetici del Consiglio Nazionale delle Ricerche––CNR TEMPE, C.so P.Sposi, 29, Lecco, Italy Abstract PulsedlaserdepositionofdifferentCeO 2 basedbufferarchitectureshavebeenperformedontobiaxiallytexturedNi- based substrates. The potential of both industrially available low-oxygen resistant magnetic. NiFe and NiCrW sub- strateshavebeenexplored.AnattempttorevealtheinfluenceCeO 2 targetdopingandprocessingenvironment(vacuum or forming gas) on the formation of NiO as well as in-plane and out-of-plane orientation of the first buffer has been made. XRD has been used for layer texture characterisation. As-deposited YBCO layers were highly aligned on both types of substrate with out-of-plane and in-plane x and u scanshavingbestFWHMvaluesof4° and10° respectively. The quality of YBCO tapes as full-coated conductors or seeds for high-rate epitaxial growth by LPE is evaluated. Ó 2002 Elsevier Science B.V. All rights reserved. Keywords: YBCO; NiFe; PLD; Pd; Coated conductors 1. Introduction Compared with the other HTS compounds, YBa 2 Cu 3 Cu 7y (YBCO)hasanextraordinaryhigh- critical current density at liquid nitrogen temper- ature in the presence of magnetic fields required for electric power applications [1]. J c > 1 MA/cm 2 (77 K, 0 T) on Ni tapes was reported on rolling- assisted biaxially textured substrates (RABiTS) developed by ORNL [2]. Despite a lower oxygen resistance and ferromagnetic properties NiFe posses very good mechanical strength and is commercial available in km lengths. Recently de- velopedNiCrWtapeishighlyoxygenresistantand non-magneticmakingthistriplealloytapesuitable for ac applications. In this paper, we present an in situ pulsed laser deposition (PLD) processing of a coated conductorarchitectureonNiFeandNiCrWtapes. Physica C 372–376 (2002) 810–813 www.elsevier.com/locate/physc * Corresponding author. Address: Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK. Fax: +44-1223-334373. E-mail address: rit21@cam.ac.uk (R.I. Tomov). 0921-4534/02/$ - see front matter Ó 2002 Elsevier Science B.V. All rights reserved. PII:S0921-4534(02)00913-9