Enhancement of high Tc phase in Bi-V-Sr-Ca-Cu-O superconducting system
- 1. Osmania Univ., Hyderabad (India). Dept. of Physics
- 2. Nantes Univ., 44 (France)
- 3. Centre National de la Recherche Scientifique (CNRS), 92 - Meudon-Bellevue (France). Lab. de Magnetisme et de Physique du Solide
Description
We report on the preparation, X-ray diffraction, scanning electron microscope, ac susceptibility and dc magnetization of Bi2-xVxSr2Ca2Cu3Oy (nominal composition). The low Tc (2212) phase (Tc = 85K) dominates in the x = 0 sample with extremely weak flux pinning. In x = 0.4 sample, both flux pinning and volume fraction of the high Tc (2223) phase (Tc = 105K) were increased, with a small amount (about 5%) of the low Tc phase is still present in this sample. The intragrain critical current density of the sample with x = 0.4 was estimated and found to be comparable with that of Pb doped Bi2Sr2Ca2Cu3Oy superconductor. The data suggest that addition of V2O5 increases the volume fraction of the high Tc phase. Probable role of vanadium in enhancing the high Tc (2223) phase in Bi-V-Sr-Ca-Cu-O system is discussed
Additional details
Publishing Information
- Journal Title
- European Journal of Solid State and Inorganic Chemistry
- Journal Volume
- 29
- Journal Issue
- 6
- Journal Page Range
- p. 1229-1241.
- CODEN
- EJSCE5
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 24029305
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; DOPED MATERIALS; HIGH-TC SUPERCONDUCTORS; MAGNETIC FLUX; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; PHASE STUDIES; SCANNING ELECTRON MICROSCOPY; STRONTIUM OXIDES; SYNTHESIS; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; VANADIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; ELECTRIC CURRENTS; ELECTRON MICROSCOPY; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MATERIALS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS