(Tl, Pb, Bi)Sr2Ca2Cu3Oz superconductors with zero resistance at 120 K
Creators
- 1. Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13 Shinonome 1-Chome, Koto-Ku, Tokyo 135, Japan (Japan)
Description
We have synthesized new superconductors of nearly single phase with zero-resistance temperatures around 120 K employing a novel method for sintering. The samples included a nominal composition of (Tl0.64Pb0.2Bi0.16)Sr2Ca3Cu4Oz. This sample was prepared from the mixture of presynthesized (Tl0.64Pb0.2Bi0.16)Sr2CaCu2Oz (1212 phase), CaO, and CuO powders. The mixed powder was sintered at 920 degree C in O2 gas and post-annealed at 400--600 degree C in O2 gas. The powder x-ray diffraction revealed that the sample was isostructural with the Tl-based (Tl, Pb, Bi)Sr2Ca2Cu3Oz (1223 phase). The sample exhibited a sharp superconducting transition at Tonsetc=125 K and TR=0c=120 K and the superconducting diamagnetic signal at 10 K was about 20% of a full Meissner effect
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 56
- Journal Issue
- 13
- Series
- Appl. Phys. Lett.
- Journal Page Range
- 1281-1283
- ISSN
- 0003-6951
- CODEN
- APPLA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21057507
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANNEALING; BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; CRYSTAL STRUCTURE; HIGH TEMPERATURE; LEAD OXIDES; LOW TEMPERATURE; MEISSNER-OCHSENFELD EFFECT; PEROVSKITE; PHASE STUDIES; SINTERING; STRONTIUM OXIDES; SUPERCONDUCTIVITY; THALLIUM OXIDES; TRANSITION TEMPERATURE; TYPE-II SUPERCONDUCTORS; VERY HIGH TEMPERATURE; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; FABRICATION; HEAT TREATMENTS; LEAD COMPOUNDS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THALLIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS