Published May 1996 | Version v1
Journal article Metadata-only

Fabrication and characteristics of weak links between a and c-axis normal grains of Y1Ba2Cu3O7-x

Creators

  • 1. Department of Material Science and Engineering, Science and Technology Center for Superconductivity, Northwestern University, Evanston, Illinois 60208-3108 (United States)
  • 2. Department of Electrical Engineering and Computer Science, Science and Technology Center for Superconductivity, Northwestern University, Evanston, Illinois 60208-3108 (United States)
  • 3. Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3108 (United States)
  • 4. Department of Chemistry, Science and Technology Center for Superconductivity, Northwestern University, Evanston, Illinois 60208-3108 (United States)
  • 5. Varian Associates, Palo Alto, California 93404 (United States)

Description

We have used pulsed organometallic beam epitaxy (POMBE) to simultaneously deposit a and c-axis oriented Y1Ba2Cu3O7-x (YBCO) thin films at arbitrary locations on LaAlO3(100) substrates. Using photolithography and ion milling, several types of a-c weak links have been fabricated at the boundary between the two films. The current-voltage (I-V) characteristics show a flux flow type behavior. The resistive transitions are broad and the critical current density is low, indicating weak coupling across these boundaries. With magnetic field applied parallel to the grain boundary plane, nonhysteretic I-V curves are obtained and the critical current goes to zero at an applied magnetic field of ∼7500 Gauss. copyright 1996 Materials Research Society

Additional details

Publishing Information

Journal Title
Journal of Materials Research
Journal Volume
11
Journal Issue
5
Journal Page Range
p. 1086-1093.
ISSN
0884-2914
CODEN
JMREEE

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
27074216
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; ELECTRIC CONDUCTIVITY; EPITAXY; GRAIN BOUNDARIES; HIGH-TC SUPERCONDUCTORS; SUBSTRATES; THIN FILMS; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL GROWTH METHODS; CRYSTAL STRUCTURE; CURRENTS; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; FILMS; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS