Long laser-pulse method of producing Y-Ba-Cu-O superconducting films

Conference · Mon Nov 20 23:00:00 EST 1989

DOI:https://doi.org/10.1557/PROC-169-447· OSTI ID:5562928

Balooch, M; Siekhaus, W J ^[1]; Olander, D.R. : ^[2]; Russo, R E ^[3]

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1. Lawrence Livermore National Lab., CA (USA)
2. California Univ., Berkeley, CA (USA). Dept. of Nuclear Engineering; Lawrence Berkeley Lab., CA (USA)
3. Lawrence Berkeley Lab., CA (USA)

The quality of superconducting thin films evaporated from YBa{sub 2}Cu{sub 3}O{sub 7} targets has been improved using a long-pulse (ms) Nd-glass laser with 50 J pulse energy. The film produced on SrTiO{sub 3}, held at 690 C, and post-annealed at 880 C for about three hours began the transition to superconductivity at 85 K and had zero resistance at 79 K. The observed variation in film thickness corresponded to diffuse emission from the target, and no significant variation in composition as a function of angle of emission up to 40{degree} with respect to surface normal was seen.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-48; AC03-76SF00098
• OSTI ID: 5562928
• Report Number(s): UCRL-102452; CONF-891119--62; LBL--30122; ON: DE90005202
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
FILMS
LASERS
NEODYMIUM LASERS
OXIDES
OXYGEN COMPOUNDS
PULSES
SOLID STATE LASERS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUBSTRATES
SUPERCONDUCTING FILMS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
USES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES