Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
64 (1994), S. 3178-3180
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report on pulsed laser deposition of YBa2Cu3O7−x in a diluted O2/Ar gas resulting in thin epitaxial films which are almost outgrowth-free. Films were deposited on SrTiO3 or MgO substrates around 800 °C at a total chamber pressure of 1.0 mbar, varying the argon partial pressure from 0 to 0.6 mbar. The density of boulders and outgrowths usual for laser deposited films varies strongly with Ar pressure: the outgrowth density is reduced from 1.4×107 to 4.5×105 cm−2 with increasing Ar partial pressure, maintaining a critical temperature Tc,zero≈90 K and a transport critical current density Jc(77 K)≥106 A/cm2 by extended oxygenation time during cool down.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.111331
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