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Title: LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films

Abstract

We demonstrate high critical current density superconducting films of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8{minus}{delta}} (Tl-2212) using LaNiO{sub 3} (LNO) buffer layers. YBCO films grown on an LNO buffer layer have only a slightly lower J{sub c} (5K, H=0) than films grown directly on a bare LaAlO{sub 3} substrate. It is noteworthy that YBCO films grown on LNO buffer layers exhibit minor microstructural disorder and enhanced flux pinning. LNO-buffered Tl-2212 samples show large reductions in J{sub c} at all temperatures and fields compared to those grown on bare LaAlO{sub 3}, correlating to both a-axis grain and nonsuperconducting phase formation. With additional optimization, LNO could be a promising buffer layer for both YBCO and Tl-based superconducting films, perhaps ideally suited for coated conductor applications.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
10190
Report Number(s):
SAND99-2181J
TRN: US0103373
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Other Information: Submitted to Applied Physics Letters; PBD: 24 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BUFFERS; CRITICAL CURRENT; MAGNETIC FLUX; SUPERCONDUCTING FILMS; CURRENT DENSITY; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; THALLIUM OXIDES; CALCIUM OXIDES; LANTHANUM OXIDES; NICKEL OXIDES

Citation Formats

Carlson, C.M., Parilla, P.A., Siegal, M.P., Ginley, D.S., Wang, Y.-T., Blaugher, R.D., Price, J.C., Overmyer, D.L., and Venturini, E.L. LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films. United States: N. p., 1999. Web.
Carlson, C.M., Parilla, P.A., Siegal, M.P., Ginley, D.S., Wang, Y.-T., Blaugher, R.D., Price, J.C., Overmyer, D.L., & Venturini, E.L. LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films. United States.
Carlson, C.M., Parilla, P.A., Siegal, M.P., Ginley, D.S., Wang, Y.-T., Blaugher, R.D., Price, J.C., Overmyer, D.L., and Venturini, E.L. Tue . "LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films". United States. https://www.osti.gov/servlets/purl/10190.
@article{osti_10190,
title = {LaNiO(3) Buffer Layers for High Critical Current Density YBa(2)Cu(3)O(7-delta) and Tl(2)Ba(2)CaCu(2)O(8-delta) Films},
author = {Carlson, C.M. and Parilla, P.A. and Siegal, M.P. and Ginley, D.S. and Wang, Y.-T. and Blaugher, R.D. and Price, J.C. and Overmyer, D.L. and Venturini, E.L.},
abstractNote = {We demonstrate high critical current density superconducting films of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8{minus}{delta}} (Tl-2212) using LaNiO{sub 3} (LNO) buffer layers. YBCO films grown on an LNO buffer layer have only a slightly lower J{sub c} (5K, H=0) than films grown directly on a bare LaAlO{sub 3} substrate. It is noteworthy that YBCO films grown on LNO buffer layers exhibit minor microstructural disorder and enhanced flux pinning. LNO-buffered Tl-2212 samples show large reductions in J{sub c} at all temperatures and fields compared to those grown on bare LaAlO{sub 3}, correlating to both a-axis grain and nonsuperconducting phase formation. With additional optimization, LNO could be a promising buffer layer for both YBCO and Tl-based superconducting films, perhaps ideally suited for coated conductor applications.},
doi = {},
journal = {Applied Physics Letters},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}