The irreversibility line of HgBa[sub 2]CuO[sub 4+[delta]]

Journal Article · Mon Aug 02 00:00:00 EDT 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.109931· OSTI ID:6205644

Welp, U; Crabtree, G W; Wagner, J L; Hinks, D G; Radaelli, P G; Jorgensen, J D; Mitchell, J F ^[1]; Dabrowski, B ^[2]

---

1. Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Physics, Northern Illinois University, Dekalb, Illinois 60115 (United States)

Using magnetization hysteresis loops we have determined the irreversibility line of polycrystalline samples of HgBa[sub 2]CuO[sub 4+[delta]] and Hg[sub 0.8]Pb[sub 0.2]Ba[sub 2]CuO[sub 4+[delta]]. The irreversibility line is found at rather high temperatures. It does not show the drastic depression with increasing temperature as is observed in highly anisotropic Bi/Tl-based CuO superconductors. At 77 K the irreversibility field is around 0.3 T, which is substantially higher than in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8] and Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10]. The advantages of this material for large-scale applications are outlined.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6205644
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 63:5; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
DIAGRAMS
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
IRREVERSIBLE PROCESSES
MAGNETIC FLUX
MAGNETIZATION
MERCURY COMPOUNDS
MERCURY OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
POLYCRYSTALS
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS