Critical Current and Vortex Pinning Properties in YBa2Cu3O7- x Films With Ba2YTaO6 + Ba2YNbO6 and BaZrO3 Nanoinclusions by DC Transport and Microwave Measurements

2018 ◽  
Vol 28 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Anna Frolova ◽  
Nicola Pompeo ◽  
Francesco Rizzo ◽  
Kostiantyn Torokhtii ◽  
Andrea Augieri ◽  
...  
Keyword(s):  
Critical Current ◽  
Vortex Pinning ◽  
Microwave Measurements ◽  
Pinning Properties

scholarly journals Enhanced flux pinning isotropy by tuned nanosized defect network in superconducting YBa2Cu3O6+x films

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Mukarram Zaman Khan ◽  
Elmeri Rivasto ◽  
Jussi Tikkanen ◽  
Hannes Rijckaert ◽  
Mika Malmivirta ◽  
...  
Keyword(s):  
Thin Films ◽  
Critical Current ◽  
Flux Pinning ◽  
Md Simulation ◽  
Film Growth ◽  
Quantitative Model ◽  
Vortex Pinning ◽  
Dopant Content ◽  
Ybco Thin Films ◽  
Pinning Properties

Abstract Striving to improve the critical current density Jc of superconducting YBa2Cu3O6+x (YBCO) thin films via enhanced vortex pinning, the interplay between film growth mechanisms and the formation of nanosized defects, both natural and artificial, is systematically studied in undoped and BaZrO3 (BZO)-doped YBCO thin films. The films were grown via pulsed laser deposition (PLD), varying the crystal grain size of the targets in addition to the dopant content. The microstructure of the PLD target has been observed to have a great impact on that of the deposited thin films, including the formation of vortex pinning centers, which has direct implications on the superconducting performance, especially on the isotropy of flux pinning properties. Based on experimentally measured angular dependencies of Jc, coupled with a molecular dynamics (MD) simulation of flux pinning in the YBCO films, we present a quantitative model of how the splay and fragmentation of BZO nanorods artifically introduced into the YBCO film matrix explain the majority of the observed critical current anisotropy.

scholarly journals Enhancement of critical current density in a superconducting NbSe2 step junction

Nanoscale ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 12076-12082
Author(s):  
Xin He ◽  
Yan Wen ◽  
Chenhui Zhang ◽  
Zhiping Lai ◽  
Eugene M. Chudnovsky ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Transport Properties ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning ◽  
Step Junction

We investigate the transport properties of a NbSe2 step junction and verify that the enhancement of the critical current density is due to the vortex pinning at the step junction.

On the through-thickness critical current density of an YBa2Cu3O7−x film containing a high density of insulating, vortex-pinning nanoprecipitates

2007 ◽  
Vol 90 (25) ◽  
pp. 252502 ◽  
Author(s):  
S. I. Kim ◽  
F. Kametani ◽  
Z. Chen ◽  
A. Gurevich ◽  
D. C. Larbalestier ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
High Density ◽  
Vortex Pinning

scholarly journals Vortex pinning properties of –Ba–Cu–O and –Ba–Cu–O superconducting bulks

2009 ◽  
Vol 469 (15-20) ◽  
pp. 1218-1220 ◽  
Author(s):  
T. Naito ◽  
K. Sato ◽  
D. Yamaguchi ◽  
H. Fujishiro
Keyword(s):  
Vortex Pinning ◽  
Pinning Properties

Analysis of the critical current density and flux pinning properties in iron-based Ba0.55K0.45Fe2As2 high-T c superconductor

2013 ◽  
Vol 62 (12) ◽  
pp. 2011-2015
Author(s):  
Dawood Ahmad ◽  
I. S. Park ◽  
G. C. Kim ◽  
Rock KilKo ◽  
J. H. Lee ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Flux Pinning ◽  
Iron Based ◽  
Pinning Properties
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