NDLI: Magneto-Optical Investigations of LZO Buffer Layer Thickness Effects on YBCO Microstructure in the Simple NiW/LZO/YBCO Structure

Content Provider	IEEE Xplore Digital Library
Author	Caroff, T. Porcar, L. Chaudouet, P. Abrutis, A. Jimenez, C. Odier, P. Weiss, F.
Copyright Year	2002
Abstract	The Ni_RABiTS/La₂Zr₂O_7MOD/YBa₂Cu₃ O_7MOCVD structure is a promising architecture for (YBCO) coated conductors. We succeeded in growing highly textured superconducting YBCO films on LZO-buffered Ni-5 at%W (NiW) substrates by metalorganic chemical vapor deposition (MOCVD). A single LZO buffer layer grown by metalorganic decomposition (MOD) is sufficient to ensure structural compatibility between YBCO and Ni, and to protect the substrate from oxidation during YBCO deposition. Textured Ni substrates obtained by rolling technique have intrinsic defects such as grain boundaries and rolling scratches. It is not easy to highlight their effects on LZO and YBCO films by usual measurements like XRD or SEM. The combination of Electron Backscattered Diffraction (EBSD) and Magneto-Optics imaging (MO) is useful to image grain boundaries and flux distribution in coated conductors. It provides complementary information on superconducting film qualities. These two techniques allowed us to understand how the microstructure of the LZO buffer layer and thus of the YBCO film is linked to the current density in this simple heterostructure.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3184
Ending Page	3187
Page Count	4
File Size	982788
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Yttrium barium copper oxide Magnetooptic effects Buffer layers Microstructure Superconducting films Substrates Conductors Grain boundaries Zirconium Superconducting epitaxial layers microstructure Coated conductors EBSD magneto-optical imaging
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Development of Solution Buffer Layers for RABiTS Based YBCO Coated Conductors

Microstructure Analysis of High-Quality Buffer Layers on Textured NiW Tapes for YBCO Coated Conductors

Growth and characterization of oxide buffer layers for YBCO coated conductors

Use of SrTiO/sub 3/ as a single buffer layer for RABiTS YBCO coated conductor

Development of MOCVD Technology for Integrated YBCO Layer/Buffer Layer Fabrication for Coated Conductors

Coordinated characterization of coated conductors (C/sup 4/)

Reel-to-reel MOCVD for YBCO coated conductor

Roughness and Texture of Epitaxial LZO Thin Films Grown on RABiTS Ni5W Substrates

Strategic Buffer Layer Development for YBCO Coated Conductors

Magneto-Optical Investigations of LZO Buffer Layer Thickness Effects on YBCO Microstructure in the Simple NiW/LZO/YBCO Structure

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