Numerical Simulation of Inductive Measurement Method for Critical Current Density in HTS Thin Film: Influence of DC Magnetic Field on Accuracy

2009 ◽  
Vol 19 (3) ◽  
pp. 3573-3576
Author(s):  
T. Takayama ◽  
A. Kamitani
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Numerical Simulation ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Measurement Method ◽  
Dc Magnetic Field ◽  
Inductive Measurement

Estimation of Local Current Transport Properties in Thin Film Superconductor Based on Scanning Hall-probe Microscopy

2012 ◽  
Vol 1434 ◽  
Author(s):  
Kohei Higashikawa ◽  
Kei Shiohara ◽  
Masayoshi Inoue ◽  
Takanobu Kiss ◽  
Masateru Yoshizumi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Critical Current Density ◽  
Electric Field ◽  
Critical Current ◽  
Current Density ◽  
Limiting Factors ◽  
Hall Probe ◽  
Scanning Hall Probe Microscopy ◽  
Field Criterion

ABSTRACTTo enhance a global critical current in a superconductor, it is indispensable to understand current limiting factors and their influence on such a critical current. From this point of view, we have investigated in-plane distribution of local critical current density and its electric field criterion in a thin-film superconductor by using scanning-Hall probe microscopy. In a remanent state, after the application of sufficiently high magnetic field to a sample, current flows at critical current density according to the critical state model. Such distribution of current density was estimated from that of measured magnetic field using the Biot-Savart law. Furthermore, the corresponding electric field criterion was evaluated from the relaxation of such remanent magnetic field by considering Faraday’s law. This means that we could estimate in-plane distribution of local critical current density as a function of electric field criterion in a nondestructive manner. This characterization method would be very helpful for finding current limiting factors in a thin-film superconductor and their influence on its global current density versus electric field properties which would usually be obtained by four-probe method.

Angular Dependence of Magnetic Field on Critical Current Density in Tl2Ba2Ca2Cu3Ox Thin Film

1991 ◽  
pp. 555-558
Author(s):  
Toshihide Nabatame ◽  
Yukio Saito ◽  
Katsuzo Aihara ◽  
Tomoichi Kamo ◽  
Shin-Pei Matsuda
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Critical Current Density ◽  
Critical Current ◽  
Angular Dependence ◽  
Current Density

scholarly journals Enhancing the effective critical current density in a Nb superconducting thin film by cooling in an inhomogeneous magnetic field

2021 ◽  
Vol 119 (2) ◽  
pp. 022602
Author(s):  
D. A. D. Chaves ◽  
I. M. de Araújo ◽  
D. Carmo ◽  
F. Colauto ◽  
A. A. M. de Oliveira ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Inhomogeneous Magnetic Field ◽  
Superconducting Thin Film
Sign in / Sign up

Export Citation Format

Share Document