Al2O3 additions for isothermal melt processing of Bi2Sr2CaCu2Oy
Creators
- 1. Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Description
It is shown that additions of Al2O3 (1.0 wt.%) can significantly aid in the isothermal melt processing of Bi2Sr2CaCu2Oy (Bi endash 2212). Al2O3 additions provide a means for grain refinement of phases present in the partial melt. By limiting grain growth in the partial melt, solidification to form Bi endash 2212 proceeds more efficiently, resulting in fewer secondary phases and improved transport properties. Aluminum does not substitute into the superconducting phase to any appreciable extent and is present in fully processed material as small, secondary grains of approximate composition Sr2-xCaxAlOy or Bi2Sr4-xCaxAl3OyAl2O3 additions were applied to the isothermal melt processing of Bi endash 2212 thick films and current leads. copyright 1996 Materials Research Society
Additional details
Publishing Information
- Journal Title
- Journal of Materials Research
- Journal Volume
- 11
- Journal Issue
- 9
- Journal Page Range
- p. 2135-2141.
- ISSN
- 0884-2914
- CODEN
- JMREEE
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28007221
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; ELECTRIC CONDUCTIVITY; FILMS; GRAIN REFINEMENT; HIGH-TC SUPERCONDUCTORS; MELTING; MICROSTRUCTURE; PHASE STUDIES; STRONTIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; ELECTRICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS