Observed regimes of collective flux creep in proton-irradiated, single-crystal Y-Ba-Cu-O: Dependence on current density

1994 ◽  
Vol 49 (18) ◽  
pp. 13287-13290 ◽  
Author(s):  
J. R. Thompson ◽  
Yang Ren Sun ◽  
D. K. Christen ◽  
L. Civale ◽  
A. D. Marwick ◽  
...  
Keyword(s):  
Single Crystal ◽  
Current Density ◽  
Flux Creep

Low-temperature magnetization and flux creep studies of a DyBa2Cu3O7 single crystal with a vibrating reed

1995 ◽  
Vol 246 (1-2) ◽  
pp. 123-132 ◽  
Author(s):  
K. Rogacki ◽  
P. Esquinazi ◽  
E. Faulhaber ◽  
W. Sadowski
Keyword(s):  
Low Temperature ◽  
Single Crystal ◽  
Flux Creep ◽  
Vibrating Reed

Low temperature flux creep measurements on a Bi2Sr2CaCu2O8+δ single crystal

1991 ◽  
Vol 185-189 ◽  
pp. 2507-2508 ◽  
Author(s):  
C.J. Van Der Beek ◽  
P.H. Kes ◽  
M.P. Maley ◽  
M.J.V. Menken ◽  
A.A. Menovsky
Keyword(s):  
Low Temperature ◽  
Single Crystal ◽  
Flux Creep ◽  
Creep Measurements

Analysis of Electromagnetic Properties of Bulk Superconductors

2021 ◽  
Vol 21 (9) ◽  
pp. 4941-4943
Author(s):  
Sang Heon Lee
Keyword(s):  
Critical Current Density ◽  
Single Crystal ◽  
Critical Current ◽  
Current Density ◽  
Magnetic Force ◽  
Electromagnetic Properties ◽  
Weak Links ◽  
Metallic Silver ◽  
Bulk Superconductor ◽  
Slow Cooling

In the present study, a YBa2Cu3O7−y bulk superconductor added with 5~10 wt% Ag was fabricated employing Sm123 as a seed to produce a superconductive single crystal. Metallic silver was added to the single crystal of YBa2Cu3O7−y to remove defects such as cracks and pores. Electromagnetic properties of the bulk superconductor at 77 K were analyzed based on relationships of magnetic levitation, trapped magnetic force, and critical current density. The critical current density of the superconductor at 77 K and 0 T was 3.53 × 104 A/cm2. Discontinuous points in the distribution of magnetic field lines were not observed, implying that these two specimens grew well as a single crystal without specific weak links. For the growth of a superconductive nano crystal employing slow cooling at temperature of formation of 123 phase, superconductive nano crystals were aligned in a-b direction, the direction of peak current flow. The peak value of the trapped magnetic force of the YBa2Cu3O7−y superconductor specimen was 3.23 kG. Using the FC method, peak forces of attraction and repulsion were 21.696 N and 70.168 N, respectively.

scholarly journals Critical current density, vortex dynamics, and phase diagram of single-crystal FeSe

2015 ◽  
Vol 92 (14) ◽  
Author(s):  
Yue Sun ◽  
Sunseng Pyon ◽  
Tsuyoshi Tamegai ◽  
Ryo Kobayashi ◽  
Tatsuya Watashige ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Critical Current Density ◽  
Single Crystal ◽  
Critical Current ◽  
Current Density ◽  
Vortex Dynamics

Mocvd of Polycrystalline and Epitaxial Complex Oxides by Liquid Delivery

1997 ◽  
Vol 474 ◽  
Author(s):  
J. F. Roeder ◽  
S. M. Bilodeau ◽  
R. J. Carl ◽  
T. H. Baum ◽  
P. C. Van Buskirk ◽  
...  
Keyword(s):  
Single Crystal ◽  
Current Density ◽  
Complex Oxides ◽  
The Other ◽  
Charge Storage ◽  
Growth Mechanisms ◽  
X Ray ◽  
Unique Approach ◽  
Bst Films ◽  
Liquid Delivery

ABSTRACTA unique approach to MOCVD of complex oxides enables deposition of a number of materials of technological importance through the use of liquid delivery of metalorganic precursors. Methodologies for control of composition and exploration of. process space are compared for two film systems, one in a relatively mature state of development ((Ba,Sr)Ti03), the other in an early state of development (Ni-ferrite). In both cases, composition was controlled by mixing metalorganic precursors dissolved in solvents using a liquid delivery system. Films with excellent crystalline quality were deposited in both cases. Polycrystalline BST films displayed properties suitable for DRAM applications: charge storage densities > 80 fF/μm2 and leakage current density < 10−8 A/cm2 for films as thin as 15 nm. Growth mechanisms and rates were determined for the single component oxides of the ferrite films. Epitaxial NiFe204 films were deposited on MgO single crystal substrates at 650°C; x-ray rocking curves yielded FWHM values of 0.046°, commensurate with the substrate.

Flux creep in heavily lead doped Bi2212 single crystal

2000 ◽  
Vol 341-348 ◽  
pp. 1369-1370 ◽  
Author(s):  
K.K. Uprety ◽  
J. Horvat ◽  
X.L. Wang ◽  
M. Ionescu ◽  
H.K. Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Flux Creep ◽  
Bi2212 Single Crystal
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