Grain and grain-boundary critical currents in coated conductors with noncorrelating YBa2Cu3O7 and substrate grain-boundary networks

2006 ◽  
Vol 88 (13) ◽  
pp. 132508 ◽  
Author(s):  
A. Palau ◽  
T. Puig ◽  
X. Obradors ◽  
R. Feenstra ◽  
A. A. Gapud ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Critical Currents ◽  
Coated Conductors

Effect of Strain on Grain and Grain-Boundary Critical Currents of YBCO Coated Conductors

2005 ◽  
Vol 15 (2) ◽  
pp. 2790-2793 ◽  
Author(s):  
A. Palau ◽  
T. Puig ◽  
X. Obradors ◽  
R. Feenstra ◽  
H.C. Freyhardt
Keyword(s):  
Grain Boundary ◽  
Critical Currents ◽  
Coated Conductors ◽  
Ybco Coated Conductors

Interface control in all metalorganic deposited coated conductors: Influence on critical currents

2006 ◽  
Vol 21 (09) ◽  
pp. 2176-2184 ◽  
Author(s):  
Alberto Pomar ◽  
Mariona Coll ◽  
Andrea Cavallaro ◽  
Jaume Gàzquez ◽  
Narcis Mestres ◽  
...  
Keyword(s):  
Critical Currents ◽  
Coated Conductors ◽  
Interface Control

Grain boundary networks in Y123 coated conductors: Formation, properties and simulation

2001 ◽  
Vol 11 (1) ◽  
pp. 3872-3875 ◽  
Author(s):  
B. Holzapfel ◽  
L. Fernandez ◽  
F. Schindler ◽  
B. de Boer ◽  
N. Reger ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Coated Conductors

Critical Currents at the Grain Boundary of ${\rm Sm}_{1}{\rm Ba}_{2}{\rm Cu}_{3}{\rm O}_{7-\delta}$ Film Under Oblique Magnetic Fields

2007 ◽  
Vol 17 (2) ◽  
pp. 3605-3607
Author(s):  
YongHwan Jung ◽  
Sunme Lim ◽  
Jaeun Yoo ◽  
SangMoo Lee ◽  
Yehyun Jung ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Grain Boundary ◽  
Critical Currents

The microstructure of continuously processed Yba2Cu3Oy coated conductors with underlying CeO2 and ion-beam-assisted yttria-stabilized zirconia buffer layers

2000 ◽  
Vol 15 (5) ◽  
pp. 1110-1119 ◽  
Author(s):  
T. G. Holesinger ◽  
S. R. Foltyn ◽  
P. N. Arendt ◽  
H. Kung ◽  
Q. X. Jia ◽  
...  
Keyword(s):  
Interfacial Reaction ◽  
Ion Beam ◽  
Misfit Strain ◽  
Critical Currents ◽  
Coated Conductors ◽  
Yttria Stabilized Zirconia ◽  
Buffer Layers ◽  
Inconel 625 ◽  
Microstructural Development ◽  
Stabilized Zirconia

The microstructural development of YBa2Cu3Oy (Y-123) coated conductors based on the ion-beam-assisted deposition (IBAD) of yttria-stabilized zirconia (YSZ) to produce a biaxially textured template is presented. The architecture of the conductors was Y-123/CeO2/IBAD YSZ/Inconel 625. A continuous and passivating Cr2O3 layer forms between the YSZ layer and the Inconel substrate. CeO2 and Y-123 are closely lattice-matched, and misfit strain is accommodated at the YSZ/CeO2 interface. Localized reactions between the Y-123 film and the CeO2 buffer layer result in the formation of BaCeO3, YCuO2, and CuO. The positive volume change that occurs from the interfacial reaction may act as a kinetic barrier that limits the extent of the reaction. Excess copper and yttrium generated by the interfacial reaction appear to diffuse along grain boundaries and intercalate into Y-123 grains as single layers of the Y-247, Y-248, or Y-224 phases. The interfacial reactions do not preclude the attainment of high critical currents (Ic) and current densities (Jc) in these films nor do they affect to any appreciable extent the nucleation and alignment of the Y-123 film.

Critical Currents of Overdoped Co-evaporated YBCO Coated Conductors

2007 ◽  
Vol 1001 ◽  
Author(s):  
Jens Hänisch ◽  
Jonathan Storer ◽  
Chris Sheehan ◽  
Yates Coulter ◽  
Vladimir Matias
Keyword(s):  
Critical Temperature ◽  
Critical Current Density ◽  
Oxygen Content ◽  
Lattice Spacing ◽  
Surface Coverage ◽  
Critical Currents ◽  
Coated Conductors ◽  
Hole Doping ◽  
Coated Conductor ◽  
Ybco Coated Conductors

AbstractCoated conductor samples, prepared by reactive co-evaporation, are investigated with respect to the hole-doping dependence of the critical current density. The samples are annealed in an atmosphere of variable oxygen content after which critical currents, critical temperature and the c-axis lattice spacing are measured. The lattice spacing increases with decreasing oxygen content, consistent with literature data. These co-evaporated samples show hole overdoped behavior with respect to the maximum Tc. The achievable range of hole doping in these samples seems to depend on surface coverage. Both self-field and in-field Jc at 75.5 K have a maximum in the overdoped region but at less than maximum oxygen content. The reason for the overdoping of these samples is discussed briefly in terms of Y-Ba disorder.

CRITICAL CURRENTS IN ROEBEL ASSEMBLED COATED CONDUCTORS (RACC)

2008 ◽  
Author(s):  
W. Goldacker ◽  
A. Frank ◽  
R. Heller ◽  
B. Ringsdorf ◽  
S. I. Schlachter ◽  
...  
Keyword(s):  
Critical Currents ◽  
Coated Conductors
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