Epitaxial (La, Sr)TiO3 on textured Ni-W as a conductive buffer architecture for high temperature superconducting coated conductor

K. Kim; D. P. Norton; D. K. Christen; C. Cantoni; T. Aytug; A. Goyal

doi:10.1016/j.physc.2008.04.010

Epitaxial (La, Sr)TiO₃ on textured Ni-W as a conductive buffer architecture for high temperature superconducting coated conductor

K. Kim
, D. P. Norton
, D. K. Christen
, C. Cantoni
, T. Aytug
, A. Goyal

Nanomaterials Chemistry Group

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The formation of epitaxial (La, Sr)TiO₃ on biaxially-textured Ni-W metal alloy tape was examined as a conductive buffer layer for YBa₂Cu₃O₇ film growth. A TiN epitaxial nucleation layer served as an effective template layer for subsequent (La, Sr)TiO₃ film growth on the Ni-W tape. The TiN/(La, Sr)TiO₃ multilayer was epitaxial on the Ni-W substrate as confirmed via four-circle X-ray diffraction. A high temperature superconducting YBa₂Cu₃O₇ film was deposited epitaxially on the (La, Sr)TiO₃/TiN/Ni-W tape. The YBa₂Cu₃O₇ film exhibited a superconducting transition temperature of 86 K and critical current density of 0.42 × 10⁶ A/cm² at 77 K.

Original language	English
Pages (from-to)	961-967
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	468
Issue number	13
DOIs	https://doi.org/10.1016/j.physc.2008.04.010
State	Published - Jul 1 2008

Funding

This work was partially supported by the Air Force Office of Scientific Research. The ORNL research was sponsored by the US Department of Energy under contract with UT-Battelle, LLC.

Keywords

Buffer layers
Coated conductors
Cuprate superconductor

Access to Document

10.1016/j.physc.2008.04.010

Cite this

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title = "Epitaxial (La, Sr)TiO3 on textured Ni-W as a conductive buffer architecture for high temperature superconducting coated conductor",

abstract = "The formation of epitaxial (La, Sr)TiO3 on biaxially-textured Ni-W metal alloy tape was examined as a conductive buffer layer for YBa2Cu3O7 film growth. A TiN epitaxial nucleation layer served as an effective template layer for subsequent (La, Sr)TiO3 film growth on the Ni-W tape. The TiN/(La, Sr)TiO3 multilayer was epitaxial on the Ni-W substrate as confirmed via four-circle X-ray diffraction. A high temperature superconducting YBa2Cu3O7 film was deposited epitaxially on the (La, Sr)TiO3/TiN/Ni-W tape. The YBa2Cu3O7 film exhibited a superconducting transition temperature of 86 K and critical current density of 0.42 × 106 A/cm2 at 77 K.",

keywords = "Buffer layers, Coated conductors, Cuprate superconductor",

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T1 - Epitaxial (La, Sr)TiO3 on textured Ni-W as a conductive buffer architecture for high temperature superconducting coated conductor

AU - Kim, K.

AU - Norton, D. P.

AU - Christen, D. K.

AU - Cantoni, C.

AU - Aytug, T.

AU - Goyal, A.

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AB - The formation of epitaxial (La, Sr)TiO3 on biaxially-textured Ni-W metal alloy tape was examined as a conductive buffer layer for YBa2Cu3O7 film growth. A TiN epitaxial nucleation layer served as an effective template layer for subsequent (La, Sr)TiO3 film growth on the Ni-W tape. The TiN/(La, Sr)TiO3 multilayer was epitaxial on the Ni-W substrate as confirmed via four-circle X-ray diffraction. A high temperature superconducting YBa2Cu3O7 film was deposited epitaxially on the (La, Sr)TiO3/TiN/Ni-W tape. The YBa2Cu3O7 film exhibited a superconducting transition temperature of 86 K and critical current density of 0.42 × 106 A/cm2 at 77 K.

KW - Buffer layers

KW - Coated conductors

KW - Cuprate superconductor

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