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Growth of thick Yba2Cu3O7−δ films carrying a critical current of over 230 A/cm on single LaMnO3-buffered ion-beam assisted deposition MgO substrates

Published online by Cambridge University Press:  31 January 2011

M. Paranthaman ,
T. Aytug ,
D. K. Christen ,
P. N. Arendt ,
S. R. Foltyn ,
J. R. Groves ,
L. Stan ,
R. F. DePaula ,
H. Wang  and
T. G. Holesinger
M. Paranthaman
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
T. Aytug
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
D. K. Christen
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
P. N. Arendt
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
S. R. Foltyn
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
J. R. Groves
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
L. Stan
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
R. F. DePaula
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
H. Wang
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
T. G. Holesinger
Affiliation:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
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Abstract

A single LaMnO3 buffer layer was developed for the growth of superconducting thick YBa2Cu3O7−δ (YBCO) films on polycrystalline Ni-alloy substrates where a biaxially textured MgO layer, produced by ion-beam assisted deposition (IBAD), was used as a template. Using pulsed laser deposition, a 1.65-μm-thick YBCO film with a critical current density of 1.4 × 106 A/cm2 in self field at 75 K was achieved on sputtered LaMnO3-buffered IBAD MgO substrates. This corresponds to a critical current (Ic) of 231 A/cm-width. This result demonstrates the possibility of using both LaMnO3 buffer and IBAD MgO template for producing high current density YBCO-coated conductors.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 9 , September 2003 , pp. 2055 - 2059
Copyright
Copyright © Materials Research Society 2003

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References

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