High Tc superconductivity in the triple-perovskite La-rare earth or alkali metal-Ba-Ca-Mg or Cd-Cu-oxide system. Technical report, January-December 1996
Bulk targets of compounds in the system La(3{minus}z)Me(z)Ba3Ca(1{minus}v)Nc{sub v}Cu7O(16+v) where Me=rare earth or Na and Nc=Mg or Cd were prepared by solid state reactions. They were employed to deposit by pulse laser deposition thin films of the superconductor on single crystal substrates of LaAlO3, LSAT, and GGG. Phase relationships and orientation relationships were obtained from diffractometer scans. All compounds exhibited a (001) relationship with all substrates. Lattice parameters, transition temperatures and widths are reported for each superconducting compound. All substituted compounds were superconducting but no increase in Tc was observed for any. All thin films heated to 750 deg C desorbed little oxygen compared to YBCO.
- Research Organization:
- Army Research Lab., Fort Monmouth, NJ (United States)
- OSTI ID:
- 512651
- Report Number(s):
- AD-A-324403/5/XAB; ARL-TR-1131; TRN: 71880247
- Resource Relation:
- Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
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