Open AccessCORRELATION BETWEEN THE IRREVERSIBILITY LINE AND PINNING POTENTIAL IN HIGH-Tc SUPERCONDUCTOR YBa2Cu3O7-δ
Author(s) -
Xin Jin,
Yitong Zhang,
Lu Rui-Xi,
X.X. Yao,
Liu Feng-Sheng,
Mou Hui-Lin,
Wu Xiao-Zu,
Lian Zhou
Publication year - 1992
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.41.123
Subject(s) - condensed matter physics , line (geometry) , superconductivity , critical current , materials science , flux pinning , high temperature superconductivity , pinning force , range (aeronautics) , physics , mathematics , composite material , geometry
We have studied the irreversibility line and pinning potential U0 of high-Tc melt-textured YBa2Cu3O7-δ samples and found that the irreversibility line takes an exponential form B*-e(-T/Tc) over the temperature range of 72-85K, whereas the corresponding magnetic measurement at 77K gave a nonvanishing critical current density It is shown in the present paper that the functional expression of irreversibility line and pinning potential U0 of samples are closely associated.