Effect of substrate-twin-induced microstructure on transport properties of epitaxial Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub x} films in a magnetic field

Conference · Sat Aug 01 04:00:00 EDT 1992

OSTI ID:10183629

Kim, D H; Miller, D J; Hettinger, J D; Gray, K E; Landis, P G; Sharping, J E ^[1]; Eddy, M ^[2]

---

1. Argonne National Lab., IL (United States)
2. Superconducting Technology, Inc., Santa Barbara, CA (United States)

The role of substrate-induced microstructure on transport properties in c-axis oriented epitaxial Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub x} films grown on LaAlO{sub 3} and SrTiO{sub 3} has been studied. For a magnetic field parallel to the Cu-0 planes, resistivity and the critical current density, J{sub c}, have been measured as a function of angle {theta} between the applied field and the direction of transport current. Resistivity dips and enhancement of the critical current density, J{sub c}, were observed for magnetic fields applied parallel to the substrate twins in LaAlO{sub 3} in high fields ({ge} 2 T). Meanwhile for films on SrTiO{sub 3}, resistivity and J{sub c} were Lorentz-force independent.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10183629
• Report Number(s): ANL/CP--77431; CONF-920802--18; ON: DE93000605
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202
360207
ALUMINATES
BARIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
MAGNETIC FIELDS
ORIENTATION
STRONTIUM TITANATES
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
THALLIUM OXIDES
TWINNING