Published 1993
| Version v1
Journal article
New aspects on fluorination of Bi(Pb)-Sr-Ca-Cu-O-reasons for the improved superconducting properties
- 1. Humboldt-Universitaet, Berlin (Germany)
- 2. AN SSSR, Moscow (Russian Federation)
- 3. Max-Planck-Institut fuer Festkoerperforschung, Stuttgart (Germany)
Description
The Freeze-drying technique is employed in this study to prepare Bi(Pb)-Sr-Ca-Cu-O(F) superconducting materials. Reactions which occur during the sintering process and the implication of the fluorination for high-Tc superconductivity are investigated. Results of X-ray, REM, EPMA, EDX, and chemical analysis suggest that a small quantity of fluorine atoms is incorporated into the lattice of the 2223 phase. A 'grain size effect' and probably the incorporation of fluoride into the lattice are responsible for improved superconducting properties of the fluorinated materials. (author). 13 refs., 6 figs., 2 tabs
Additional details
Publishing Information
- Journal Title
- European Journal of Solid State and Inorganic Chemistry
- Journal Volume
- 30
- Journal Issue
- 7-8
- Journal Page Range
- p. 701-712.
- ISSN
- 0992-4361
- CODEN
- EJSCE5
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 25001712
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BACKSCATTERING; BISMUTH OXIDES; CALCINATION; CALCIUM OXIDES; CHEMICAL PREPARATION; COPPER OXIDES; CRYSTAL LATTICES; CUPRATES; DIFFRACTION METHODS; FLUORINATION; GRAIN SIZE; HIGH-TC SUPERCONDUCTORS; LEAD OXIDES; LYOPHILIZATION; MAGNETIC SUSCEPTIBILITY; MEISSNER-OCHSENFELD EFFECT; STRONTIUM OXIDES; SUPERCONDUCTIVITY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COPPER COMPOUNDS; CRYSTAL STRUCTURE; DECOMPOSITION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HALOGENATION; LEAD COMPOUNDS; MAGNETIC PROPERTIES; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PYROLYSIS; SCATTERING; SIZE; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; SYNTHESIS; TRANSITION ELEMENT COMPOUNDS