Non-linear flux-pinning energies versus current densities in high-Tc superconductors: Implications for Uo's derived from magnetic relaxation experiments

1991 ◽  
Vol 77 (11) ◽  
pp. 839-841 ◽  
Author(s):  
Samuel T. Weir
Keyword(s):  
Magnetic Relaxation ◽  
Flux Pinning ◽  
High Tc Superconductors ◽  
High Tc ◽  
Non Linear ◽  
Relaxation Experiments ◽  
Current Densities ◽  
Pinning Energies

MAGNETIC PROPERTIES OF THE HIGH Tc SUPERCONDUCTORS BiSrCaCuO AND TlBaCaCuO

1989 ◽  
Vol 03 (01) ◽  
pp. 77-85 ◽  
Author(s):  
Y. D. DAI ◽  
C. LIN ◽  
W. B. ZHANG ◽  
S. Q. FENG ◽  
X. ZHU ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Flux Pinning ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
High Tc Superconductors ◽  
Magnetic Current ◽  
High Tc ◽  
Bean Model ◽  
Current Densities ◽  
Magnetic Hysteresis Loops

Magnetic properties of the high T c superconductors BiSrCaCuO and TlBaCaCuO were investigated systematically. Magnetic current densities were calculated from magnetic hysteresis loops of bulk and powdered samples by Bean model. The results showed that flux pinning in these materials is much weaker than that in YBaCuO.

Magnetic Relaxation of BiPbSrCaCuO High-Tc Superconductors: Activation Energies and Isochronal Spectrum

1997 ◽  
Vol 161 (2) ◽  
pp. 499-506 ◽  
Author(s):  
V. Raposo ◽  
M. Zazo ◽  
L. Torres ◽  
J. I. Iñiguez ◽  
A. G. Flores
Keyword(s):  
Magnetic Relaxation ◽  
Activation Energies ◽  
High Tc Superconductors ◽  
High Tc

The possible origin of power-law magnetic relaxation in high-Tc superconductors

1991 ◽  
Vol 77 (11) ◽  
pp. 843-847 ◽  
Author(s):  
S.W. Hsu ◽  
Y.C. Chen ◽  
K. Chen ◽  
W.H. Lee
Keyword(s):  
Power Law ◽  
Magnetic Relaxation ◽  
High Tc Superconductors ◽  
High Tc

A NEW METALLIC NON MAGNETIC SUBSTRATE FOR COATED TAPE SUPERCONDUCTORS

2000 ◽  
Vol 14 (25n27) ◽  
pp. 3134-3138 ◽  
Author(s):  
G. GIUNCHI ◽  
S. CERESARA ◽  
R. CORTI ◽  
T. PETRISOR ◽  
A. MANCINI ◽  
...  
Keyword(s):  
Buffer Layer ◽  
Oxide Superconductors ◽  
Manufacturing Cost ◽  
High Tc Superconductors ◽  
High Tc ◽  
Superconducting Tape ◽  
Production Technologies ◽  
Current Densities ◽  
Structural Compatibility

The high Tc superconductors, realised in form of coated tapes, rely on the quality of the substrate on which they are growing. Furthermore the aim to produce a long superconducting tape, carrying the high engineering current densities typical of the power applications, push the search of a very robust and thin metallic tape as substrate. Looking for a trade off between the mechanical strength at high temperature and the chemical and structural compatibility of the substrate with the growing oxide superconductors, a new metallic alloy is proposed and a systems combining the metallic tape plus one micron thick textured oxide buffer layer is presented. The system fulfils also the demanding characteristics of a low manufacturing cost, being based on production technologies easily scalable at high volumes, like the melt flow casting of the metallic tape and the Electron Beam (EB) evaporation of the oxide film. The main physical characteristic of the new substrate, with the deposited buffer layer, are presented.

The materials equation and scaling law of flux pinning in high Tc superconductors

1997 ◽  
Vol 5 (1-6) ◽  
pp. 147-150 ◽  
Author(s):  
Daole Yin ◽  
Chuanyi Li ◽  
Weiping Bai
Keyword(s):  
Flux Pinning ◽  
Scaling Law ◽  
High Tc Superconductors ◽  
High Tc
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