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Title: Growth of highly oriented TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting films on Ag substrates using a dip-coated barium calcium copper oxide sol-gel precursor

Abstract

Thin films of ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 7}, a precursor of TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y}, were prepared by sol-gel synthesis from an all-alkoxide solution. The barium and calcium precursors were the respective metals reacted with 2-methoxyethanol, and the copper precursor was copper methoxide complexed by triethanolamine. Silver substrates were coated using the sol-gel solution by dip-coating. Subsequent processing included a low-temperature drying step (600 C), repeated coating to provide the desired thickness, heat treatment at 850 C in oxygen to remove carbon, and reaction at 860 C in a two-zone thallination furnace to produce a TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting film. These films were strongly c-axis-aligned, had a zero-resistance temperature (T{sub c}) of 110 K, and a critical-current density (J{sub c}) of 1.9 {times} 10{sup 4} A/cm{sup 2} at 77 K and zero magnetic field.

Authors:
;  [1]
  1. Oak Ridge National Lab., TN (United States). Chemical and Analytical Sciences Div.
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
116109
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 78; Journal Issue: 9; Other Information: PBD: Sep 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; THALLIUM OXIDES; SOL-GEL PROCESS; SUPERCONDUCTIVITY; BARIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; ALKOXIDES; SURFACE COATING; CHEMICAL REACTIONS; HEAT TREATMENTS; TRANSITION TEMPERATURE; CRITICAL CURRENT; MAGNETIC FIELDS

Citation Formats

Paranthaman, M, and Beach, D B. Growth of highly oriented TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting films on Ag substrates using a dip-coated barium calcium copper oxide sol-gel precursor. United States: N. p., 1995. Web. doi:10.1111/j.1151-2916.1995.tb08701.x.
Paranthaman, M, & Beach, D B. Growth of highly oriented TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting films on Ag substrates using a dip-coated barium calcium copper oxide sol-gel precursor. United States. doi:10.1111/j.1151-2916.1995.tb08701.x.
Paranthaman, M, and Beach, D B. Fri . "Growth of highly oriented TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting films on Ag substrates using a dip-coated barium calcium copper oxide sol-gel precursor". United States. doi:10.1111/j.1151-2916.1995.tb08701.x.
@article{osti_116109,
title = {Growth of highly oriented TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting films on Ag substrates using a dip-coated barium calcium copper oxide sol-gel precursor},
author = {Paranthaman, M and Beach, D B},
abstractNote = {Thin films of ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 7}, a precursor of TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y}, were prepared by sol-gel synthesis from an all-alkoxide solution. The barium and calcium precursors were the respective metals reacted with 2-methoxyethanol, and the copper precursor was copper methoxide complexed by triethanolamine. Silver substrates were coated using the sol-gel solution by dip-coating. Subsequent processing included a low-temperature drying step (600 C), repeated coating to provide the desired thickness, heat treatment at 850 C in oxygen to remove carbon, and reaction at 860 C in a two-zone thallination furnace to produce a TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9{minus}y} superconducting film. These films were strongly c-axis-aligned, had a zero-resistance temperature (T{sub c}) of 110 K, and a critical-current density (J{sub c}) of 1.9 {times} 10{sup 4} A/cm{sup 2} at 77 K and zero magnetic field.},
doi = {10.1111/j.1151-2916.1995.tb08701.x},
journal = {Journal of the American Ceramic Society},
number = 9,
volume = 78,
place = {United States},
year = {1995},
month = {9}
}