Thermodynamic stability and kinetics of Y-Ba-Cu-O film growth at high rates in atomic and molecular oxygen

W. Jo, L. S.J. Peng, W. Wang, T. Ohnishi, A. F. Marshall, R. H. Hammond, M. R. Beasley, E. J. Peterson

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

High temperature superconductor YBa2Cu3O7-x thin films have been grown using in situ electron beam evaporation at deposition rates over 1-10 nm/s. The higher activity of atomic oxygen is being explored along with molecular oxygen at reduced pressure (5 × 10-5 Torr). Preliminary observations indicate that YBa2Cu3O7-x is stable within a band of atomic oxygen flux and temperature, similar to that published for YBa2Cu3O7-x in molecular oxygen but many orders of magnitude lower in flux. The phase equilibrium appears to be different from that found for molecular oxygen at low rates.

Original languageEnglish
Pages (from-to)183-189
Number of pages7
JournalJournal of Crystal Growth
Volume225
Issue number2-4
DOIs
StatePublished - May 2001

Bibliographical note

Funding Information:
This project is supported by DOE in the Superconductivity Program for Electric Systems, and with help from 3 M in terms of loans of equipment and characterization such as ICP, SIMS, AES, and XRD. Special thanks to R.E. Ericson, C.V. Hamilton, and J.G. Storer of 3 M.

Keywords

  • A3. Vapor phase epitaxy
  • B1. Cuprates
  • B2. Superconducting materials

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