Title :
Morphology of silver on YBa2Cu3O7-δ thin films
Author :
Roshko, A. ; Ono, R.H. ; Beall, J.A. ; Moreland, J. ; Nelson, A.J. ; Asher, S.E.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
The morphology of silver layers deposited and annealed on laser-ablated YBa2Cu3O7-δ, films was examined. Silver was found to dewet the YBa2Cu3O7-δ (001) surface on annealing in oxygen and nitrogen. This dewetting behavior may be kinetically inhibited using either thick silver layers or short anneals and low temperatures. Silver layers 70-nm to 2.5-μm thick were studied in films deposited on SrTiO3/sur, LaAlO3, and MgO substrates. Anneal times were varied from 6.5 min to 15 hr at temperatures from 200 to 700°C
Keywords :
barium compounds; composite superconductors; high-temperature superconductors; silver; superconducting thin films; yttrium compounds; (001) surface; 200 to 700 degC; 6.5 min to 15 hr; 70 nm to 2.5 micron; Ag-YBa2Cu3O7-δ; LaAlO3; MgO; SrTiO3/sur; annealing; dewetting behavior; high temperature superconductor; morphology; Annealing; Microstructure; Silver; Sputtering; Substrates; Superconducting films; Surface morphology; Temperature; Transistors; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
