TY - JOUR
T1 - Angular dependence of flux pinning in high-Tc superconducting films
AU - Horng, H. E.
AU - Sung, H. H.
AU - Yao, B. C.
AU - Yang, H. C.
PY - 1991/12/1
Y1 - 1991/12/1
N2 - We have investigated the angular dependence of the dissipative characteristics of YBa2>Cu3>O7-y(>YBCO) and >Bi2>Sr2>CaCu2>O8-y(>BSCCO) films by measuring the resistivity in a field. The dissipation can be described by the thermal activated flux creep model, >R=RO exp(-U(H,T,θ)/kBT). U depends on the magnetic field as well as the angle, θ, the magnetic field makes with the c-axis. We found that the activation energy of YBCO films decreases by a factor of 2 while that of BSCCO films decreases by a factor of about 10 in >H = 5.5>T and at >T/Tc = 0.93 as one varies θ from 90° to 0°, where θ is the angle between the c axis and the direction of the field.
AB - We have investigated the angular dependence of the dissipative characteristics of YBa2>Cu3>O7-y(>YBCO) and >Bi2>Sr2>CaCu2>O8-y(>BSCCO) films by measuring the resistivity in a field. The dissipation can be described by the thermal activated flux creep model, >R=RO exp(-U(H,T,θ)/kBT). U depends on the magnetic field as well as the angle, θ, the magnetic field makes with the c-axis. We found that the activation energy of YBCO films decreases by a factor of 2 while that of BSCCO films decreases by a factor of about 10 in >H = 5.5>T and at >T/Tc = 0.93 as one varies θ from 90° to 0°, where θ is the angle between the c axis and the direction of the field.
UR - http://www.scopus.com/inward/record.url?scp=0026407625&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026407625&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(91)91235-V
DO - 10.1016/0921-4534(91)91235-V
M3 - Article
AN - SCOPUS:0026407625
VL - 185-189
SP - 2221
EP - 2222
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 4
ER -