Interfacial reaction products and film orientation in YBa[sub 2]Cu[sub 3]O[sub 7[minus][ital x]] on zirconia substrates with and without CeO[sub 2] buffer layers

Journal Article · Sun Oct 31 23:00:00 EST 1993 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1993.2785· OSTI ID:5774660

Skofronick, G L; Carim, A H ^[1]; Foltyn, S R; Muenchausen, R E ^[2]

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1. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
2. Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Thick film (1.2 [mu]m) YBCO superconductors grown by pulsed laser deposition on unbuffered and CeO[sub 2]-buffered single crystal (001)-oriented yttria-stabilized zirconia (YSZ) substrates have been investigated. YBCO and YSZ react to form BaZrO[sub 3] (BZO), whereas YBCO and CeO[sub 2] react to form BaCeO[sub 3]. Reaction phases were examined by [theta]-2[theta] and four-circle [ital x]-ray diffraction and high resolution electron microscopy. Three orientation relationships identified for the unbuffered films were: (i) (001)[sub YBCO][parallel](011)[sub BZO][parallel](001)[sub YSZ] with [110][sub YBCO][parallel][100][sub BZO][parallel][100][sub YSZ], (ii) (001)[sub YBCO][parallel](001)[sub BZO][parallel](001)[sub YSZ] with [110][sub YBCO][parallel][100][sub BZO][parallel][100][sub YSZ], and (iii) (001)[sub YBCO][parallel](001)[sub BZO][parallel](001)[sub YSZ] with [100][sub YBCO][parallel][100][sub YSZ]. The results suggest that for films grown at typical deposition temperatures, YBCO epitaxy is established before the interfacial reaction occurs. The presence of BaCeO[sub 3] in buffered films grown at high temperatures (790 [degree]C) was confirmed by [theta]-2[theta] scans and selected area diffraction patterns.

• OSTI ID: 5774660
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 8:11; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BUFFERS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
FILMS
HIGH-TC SUPERCONDUCTORS
INTERFACES
LASER RADIATION
MICROSCOPY
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES