Hysteresis in transport critical-current measurements of oxide superconductors

Author

Goodrich, L.F. ; Stauffer, T.C.

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3234

Lastpage

3237

Abstract

We have investigated hysteresis in transport critical-current (I _c) measurements of Ag-matrix (Bi,Pb)₂Sr₂-Ca₂Cu₃O_10-x (Bi-2223) and AgMg-matrix Bi₂Sr₂CaCu₂O_8+x (Bi-2212) tapes. I_c hysteresis causes measurements with field, angle, and temperature sweeps to be multi-valued. Which value is correct is addressed in the context that the proper sequence of measurement conditions reflects the application conditions. Hysteresis in angle-sweep and temperature-sweep data is related to field-sweep hysteresis

Keywords

bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; hysteresis; lead compounds; magnesium alloys; silver; silver alloys; strontium compounds; superconducting tapes; Ag-(BiPb)₂Sr₂Ca₂Cu₃O ₁₀; Ag-matrix (Bi,Pb)₂Sr₂-Ca₂Cu₃O_10-x tapes; AgMg-matrix Bi₂Sr₂CaCu₂O_8+x tapes; Bi-2212 tapes; Bi-2223 tapes; Bi₂Sr₂CaCu₂O₈-AgMg; I_c; I_c hysteresis; angle-sweep; field-sweep hysteresis; hysteresis; oxide superconductors; temperature-sweep; transport critical-current; Conductors; Critical current; Current measurement; Goniometers; High temperature superconductors; Magnetic field measurement; Magnetic hysteresis; NIST; Superconducting magnets; Superconductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919752

Filename

919752