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In vacuo Pulsed Laser Ablation of YBa2Cu3O7–x Target for the Formation of Y2O3 Nanostructures

Published online by Cambridge University Press:  31 January 2011

D. B. Jan ,
Q. X. Jia ,
M. E. Hawley ,
G. W. Browne ,
C. J. Wetteland ,
H. P. Sun  and
X. Q. Pan
D. B. Jan
Affiliation:
Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Q. X. Jia
Affiliation:
Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
M. E. Hawley
Affiliation:
MST-8 (Structure and Property Relationships), Los Alamos National Laboratory, Los Alamos, New Mexico 87545
G. W. Browne
Affiliation:
MST-8 (Structure and Property Relationships), Los Alamos National Laboratory, Los Alamos, New Mexico 87545
C. J. Wetteland
Affiliation:
MST-8 (Structure and Property Relationships), Los Alamos National Laboratory, Los Alamos, New Mexico 87545
H. P. Sun
Affiliation:
Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109
X. Q. Pan
Affiliation:
Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109
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Abstract

The formation of superconducting YBa2Cu3O7–x (Y123) by in situ pulsed laser deposition from a stoichiometric Y123 target typically requires an oxygen-ambient environment (P ˜ 100–300-mtorr O2) and appropriate substrate temperature during deposition. We have found that pulsed laser deposition from a Y123 target in vacuo onto a (001) LaAlO3 substrate favors the formation of Y2O3. We observed that the Y2O3 (001) films yield three-dimensional nanoscale morphologies that are markedly different from the planar growth surface of conventional superconducting c-axis Y123 films and Y2O3 films formed from the pulsed laser ablation of a Y2O3 target.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 3 , March 2002 , pp. 697 - 700
Copyright
Copyright © Materials Research Society 2002

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