Investigation of the magnetic field angle dependence of resistance, irreversibility field, upper critical field and critical current density in DC sputtered Bi-2223 thin film

2011 ◽  
Vol 406 (10) ◽  
pp. 1853-1857 ◽  
Author(s):  
G. Yildirim ◽  
M. Akdogan ◽  
S.P. Altintas ◽  
M. Erdem ◽  
C. Terzioglu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Film ◽  
Critical Current Density ◽  
Critical Current ◽  
Critical Field ◽  
Current Density ◽  
Upper Critical Field ◽  
Irreversibility Field ◽  
Angle Dependence ◽  
The Magnetic Field

The Critical Current Density and the Curvature of the Magnetic Field in Epitaxial YBaCuO Films

1992 ◽  
Vol 170 (2) ◽  
pp. 549-562 ◽  
Author(s):  
D. Glatzer ◽  
A. Forkl ◽  
H. Theuss ◽  
H. U. Habermeier ◽  
H. Kronmüller
Keyword(s):  
Magnetic Field ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
The Magnetic Field

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.

scholarly journals Effect of grain refinement on enhancing critical current density and upper critical field in undoped MgB2 ex situ tapes

2008 ◽  
Vol 104 (10) ◽  
pp. 103908 ◽  
Author(s):  
A. Malagoli ◽  
V. Braccini ◽  
M. Tropeano ◽  
M. Vignolo ◽  
C. Bernini ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Grain Refinement ◽  
Critical Field ◽  
Current Density ◽  
Upper Critical Field ◽  
Ex Situ

Enhancement of the critical current density and upper critical field in Zr and Mo co-doped Nb3Sn

2009 ◽  
Vol 23 (2) ◽  
pp. 025016 ◽  
Author(s):  
Bing He ◽  
Cheng Dong ◽  
Wenhuan Cao ◽  
Changzhong Liao ◽  
Lihong Yang ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Critical Field ◽  
Current Density ◽  
Upper Critical Field ◽  
Co Doped

Critical current density and upper critical field for epitaxial Y2Ba4Cu8O16 films

1990 ◽  
Vol 73 (5) ◽  
pp. 337-340 ◽  
Author(s):  
R.C. Budhani ◽  
M.W. Ruckman ◽  
R.L. Sabatini ◽  
M. Suenaga ◽  
D.O. Welch
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Critical Field ◽  
Current Density ◽  
Upper Critical Field
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