Texture analysis of smooth in situ laser ablated YBa sub 2 Cu sub 3 O sub 7 thin films on (100) SrTiO sub 3

Journal Article · Sat Dec 15 04:00:00 EST 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.346851· OSTI ID:6227168

Cillessen, J F.M.; de Leeuw, D M; Kinneging, A J; Zalm, P C; Bongers, P F ^[1]

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1. Philips Research Laboratories, P.O. Box 80 000, 5600 JA Eindhoven, The Netherlands (NL)

The texture of YBa{sub 2}Cu{sub 3}O{sub 7} thin films on (100) SrTiO{sub 3}, grown by {ital in} {ital situ} laser ablation, was investigated by x-ray diffraction. The surface morphology is smooth with only 10{sup 5} cm{sup {minus}2} particulates of about 0.1 {mu}m in diameter. High-resolution x-ray diffraction shows that the {ital c}-axis of YBa{sub 2}Cu{sub 3}O{sub 7} is epitaxially aligned with the (001) direction of SrTiO{sub 3} irrespective of the misorientation. The {l brace}018{r brace} pole figure of YBa{sub 2}Cu{sub 3}O{sub 7} shows a fourfold symmetry which indicates that the films are ordered with respect to the substrate lattice. Moreover, the alignment in the {l brace}018{r brace} pole figure of the (220) reflections of SrTiO{sub 3} and the (018) reflections of YBa{sub 2}Cu{sub 3}O{sub 7} indicates that over the whole surface of the film the {ital a}- and {ital b}-axes of YBa{sub 2}Cu{sub 3}O{sub 7} are aligned along the (100) and (010) direction of SrTiO{sub 3}. The epitaxial nature of the films, the low density of particulates, and the lack of interdiffusion as concluded from secondary ion mass spectrometry measurements, allows for the preparation of heteroepitaxial stacks containing high-{ital T}{sub {ital c}} superconductors.

• OSTI ID: 6227168
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 68:12; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ABLATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTROMAGNETIC RADIATION
EPITAXY
FILMS
HIGH-TC SUPERCONDUCTORS
LASER RADIATION
MORPHOLOGY
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SCATTERING
SUPERCONDUCTORS
TEXTURE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES