Effect of substrate materials on laser deposited Nd[sub 1. 85]Ce[sub 0. 15]CuO[sub 4[minus][ital y]] films

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1994.1376· OSTI ID:7205514

Prasad Beesabathina, D; Salamanca-Riba, L ^[1]; Mao, S N; Xi, X X; Venkatesan, T ^[2]; Wu, X D ^[3]

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1. Center for Superconductivity Research, Materials and Nuclear Engineering Department, University of Maryland, College Park, Maryland 20742-2115 (United States)
2. Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
3. STC, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

The growth morphology and interface structure of Nd[sub 1.85]Ce[sub 0.15]CuO[sub 4[minus][ital y]] (NCCO) films grown by pulsed laser deposition on two different types of substrates, perovskite'' LaAlO[sub 3] (LAO) and SrTiO[sub 3](STO) and fluorite'' Y[sub 2]O[sub 3]-stabilized ZrO[sub 2] (YSZ), were studied using cross-sectional electron microscopy. Structurally, the NCCO films are different when grown on the two types of substrates in three aspects: (1) epitaxy, (2) substrate-film intermixing, and (3) substrate-film interface roughness. In general, films deposited on fluorite'' substrates showed better superconducting properties than the films grown on perovskite'' substrates, especially for thinner films. Lattice mismatch considerations are not sufficient to explain the observed differences since films grown on YSZ substrate showed sharp substrate-film interface in spite of their large lattice misfit. The atomic arrangements at the interfaces were analyzed in terms of electrostatic energy (charge balance) and matching of the oxygen sublattices in order to account for the experimental results.

• OSTI ID: 7205514
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 9:6; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CUPRATES
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FILMS
GROWTH
HIGH-TC SUPERCONDUCTORS
LASER RADIATION
MICROSTRUCTURE
MORPHOLOGY
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS