scholarly journals FLUX PINNING EFFECT OF OXYGEN DEFICIENCIES IN YBa2Cu3Oy

1993 ◽  
Vol 42 (10) ◽  
pp. 1669
Author(s):  
HU GANG-JIN ◽  
FANG MING-HU ◽  
LI ZHONG-XIAN ◽  
ZENG XING-BIN ◽  
CHEN NAN-SONG ◽  
...  
Keyword(s):  
Flux Pinning ◽  
Pinning Effect ◽  
Effect Of Oxygen

Flux pinning effect of small size defects in YBa2Cu3O7−δ

1994 ◽  
Vol 89 (2) ◽  
pp. 93-95 ◽  
Author(s):  
Fang Minghu ◽  
Hu Gangjin ◽  
Cai Meng ◽  
Jiao Zhenkuan ◽  
Zhang Qirui
Keyword(s):  
Flux Pinning ◽  
Pinning Effect

Effect of oxygen content on flux pinning in Nd-Ba-Cu-O single crystals

2001 ◽  
Vol 11 (1) ◽  
pp. 3639-3642 ◽  
Author(s):  
Y. Feng ◽  
A.K. Pradhan ◽  
S. Shibata ◽  
T. Machi ◽  
N. Koshizuka
Keyword(s):  
Single Crystals ◽  
Oxygen Content ◽  
Flux Pinning ◽  
Effect Of Oxygen

scholarly journals Improvement of MTG Process for Preparation and its property of YBCO Superconductor

2016 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Dea-wha Soh
Keyword(s):  
Heat Treatment ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Flux Pinning ◽  
Seed Crystal ◽  
Oxygen Absorption ◽  
Ybco Superconductor ◽  
Pinning Center ◽  
Effect Of Oxygen

<p>To improve the superconductivity of high temperature YBCO superconductor, it was prepared and examined by MTG (melt-textured growth) process with use of SmBaCuO seed crystal for orientation, additives of Ag and 211 phase for current density and flux pinning, and heat treatment for oxygen absorption. SmBaCuO single crystals were prepared by MTG process with oxygen absorption and analyzed by XRD and Laue technique. It was estimated that optimum value of Y<sub>2</sub>BaCuO<sub>5</sub> (211 phase) contents in the textured YBCO superconductor as flux pinning center was about 20 wt.%. Ag contents have no influence on the critical temperature but have large influence on the critical current density of the textured YBCO. In the YBCO matrix in experiment, 10 wt.% of Y<sub>2</sub>BaCuO<sub>5</sub> was added, the final 211 content of YBCO made by MTG process could reach about 20 wt.% which was the optimum value for the critical current density. The Ag contents in textured YBCO and the effects of Ag on the superconductivity were also examined. A 5x5x2 mm<sup>3</sup> single crystal of SmBaCuO grown by the melted-condensed process was used to be the seed crystal in the preparation of YBCO. It was proved that the orientation of YBCO was the same as the orientation of the SmBaCuO seed. The effect of oxygen absorption of the bulk oriented YBCO was studied and the heat treatment of oxygen absorption would be in flowing oxygen, at 400 for about 24 hours. The critical current density of the textured YBCO prepared by the optimum technical conditions was about 7x10<sup>4</sup> A/cm<sup>2</sup> (77K, 0.01T).</p>

scholarly journals Microscopic Structure and Flux Pinning Effect in the SmxBa1-xCuOy System.

1993 ◽  
Vol 40 (2) ◽  
pp. 151-155
Author(s):  
Shigeru Katsuyama ◽  
Hiromu Izumida ◽  
Kazuhiko Majima ◽  
Hiroshi Nagai
Keyword(s):  
Flux Pinning ◽  
Microscopic Structure ◽  
Pinning Effect

Flux pinning effect of embedded carbon nanotubes in Bi2Sr2CaCu2O8

2000 ◽  
Vol 341-348 ◽  
pp. 1269-1270 ◽  
Author(s):  
D.H. Galván ◽  
JunHo Kim ◽  
M.B. Maple ◽  
G.A. Hirata ◽  
E. Adem
Keyword(s):  
Carbon Nanotubes ◽  
Flux Pinning ◽  
Pinning Effect
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