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Transport properties of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O single crystals

Technical Report:

Abstract

The ability of type two superconductors to carry large critical currents, in the presence of high magnetic fields, is related to the pinning force acting on the flux lines. In the new high temperature superconductors, the pinning barrier energy is relatively low, and flux motion effects are unusually large. The knowledge of the pinning energy is very important in order to understand the transport properties of these materials. Recently, it has been shown that the broadening of the resistive transition of single crystals in the presence of magnetic fields can be related to thermally activated flux motion (flux creep). This paper reports on an investigation of the temperature dependence of the resistance of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub y/ and YBa/sub 2/Cu/sub 3/O/sub y/ single crystals in the presence of an external field of up to 6 Tesla with the magnetic field directed along the c axis. The measurements were performed with a d.c. bias by a four leads configuration. The data are discussed with reference to the thermally activated flux motion and with the temperature dependence of the activation energy taken into account.
Publication Date:
Jun 01, 1991
Product Type:
Technical Report
Report Number:
ENEA-RT-NUCL-90-47; CONF-9009458-1; RT/NUCL-90-47
Reference Number:
SCA: 360207; 665411; PA: ITAN-91:002098; SN: 92000621834
Resource Relation:
Conference: 1990 applied superconductivity conference,Snowmass Village, CO (United States),24 Sep 1990; Other Information: DN: From 1990 applied superconductivity conference; Snowmass Village, CO, USA (24-28 Sep 1990); PBD: Jun 1991
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; YTTRIUM OXIDES; SUPERCONDUCTIVITY; BISMUTH OXIDES; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE; MAGNETIC FIELDS; MAGNETIC FLUX; ACTIVATION ENERGY; BARIUM COMPOUNDS; COPPER COMPOUNDS; EXPERIMENTAL DATA; 360207; 665411
OSTI ID:
10107632
Research Organizations:
ENEA, Frascati (Italy). Area Nucleare; Rome-2 Univ. (Italy)
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1120-5598; Other: ON: DE92744025; TRN: 91:002098
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
ITAN
Size:
10 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Boffa, V, Murtas, F, Paterno`, G, Gambardella, U, Paroli, P, and Licci, F. Transport properties of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O single crystals. Italy: N. p., 1991. Web.
Boffa, V, Murtas, F, Paterno`, G, Gambardella, U, Paroli, P, & Licci, F. Transport properties of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O single crystals. Italy.
Boffa, V, Murtas, F, Paterno`, G, Gambardella, U, Paroli, P, and Licci, F. 1991. "Transport properties of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O single crystals." Italy.
@misc{etde_10107632,
title = {Transport properties of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O single crystals}
author = {Boffa, V, Murtas, F, Paterno`, G, Gambardella, U, Paroli, P, and Licci, F}
abstractNote = {The ability of type two superconductors to carry large critical currents, in the presence of high magnetic fields, is related to the pinning force acting on the flux lines. In the new high temperature superconductors, the pinning barrier energy is relatively low, and flux motion effects are unusually large. The knowledge of the pinning energy is very important in order to understand the transport properties of these materials. Recently, it has been shown that the broadening of the resistive transition of single crystals in the presence of magnetic fields can be related to thermally activated flux motion (flux creep). This paper reports on an investigation of the temperature dependence of the resistance of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub y/ and YBa/sub 2/Cu/sub 3/O/sub y/ single crystals in the presence of an external field of up to 6 Tesla with the magnetic field directed along the c axis. The measurements were performed with a d.c. bias by a four leads configuration. The data are discussed with reference to the thermally activated flux motion and with the temperature dependence of the activation energy taken into account.}
place = {Italy}
year = {1991}
month = {Jun}
}