Angular dependence of flux pinning in high-Tc superconducting films

H. E. Horng; H. H. Sung; B. C. Yao; H. C. Yang

doi:10.1016/0921-4534(91)91235-V

Angular dependence of flux pinning in high-T_c superconducting films

H. E. Horng^*, H. H. Sung, B. C. Yao, H. C. Yang

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have investigated the angular dependence of the dissipative characteristics of YBa₂>Cu₃>O_7-y(>YBCO) and >Bi₂>Sr₂>CaCu₂>O_8-y(>BSCCO) films by measuring the resistivity in a field. The dissipation can be described by the thermal activated flux creep model, >R=R_O exp(-U(H,T,θ)/k_BT). 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/T_c = 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.

Original language	English
Pages (from-to)	2221-2222
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 4
DOIs	https://doi.org/10.1016/0921-4534(91)91235-V
Publication status	Published - 1991 Dec 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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Cite this

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title = "Angular dependence of flux pinning in high-Tc superconducting films",

abstract = "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.",

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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.

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Angular dependence of flux pinning in high-T_c superconducting films

Abstract

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