Inducing self-assembly of Y 2BaCuO 5 nanoparticles via Ca-doping for improved pinning in YBa 2Cu 3O 7− x

Different mechanisms may exists as a means to provide additional or specialized enhancement of existing nanoparticulate pinning in YBa 2Cu 3O 7− x (YBCO) thin films. In the particular case of Y 2BaCuO 5 (Y211) nanoparticles, Ca-doping of these nanoparticles via addition to the Y211 target material p...

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Bibliographic Details
Published inPhysica. C, Superconductivity Vol. 469; no. 23; pp. 2029 - 2032
Main Authors Barnes, P.N., Haugan, T.J., Baca, F.J., Varanasi, C.V., Wheeler, R., Meisenkothen, F., Sathiraju, S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2009
Subjects
Critical currents
High temperature superconductor
Pinning
Self-assembly
YBCO
74.78.Bz
74.25.Qt
74.25.Sv
Self-assembly
Pinning
74.72.Bk
YBCO
High temperature superconductor
Critical currents
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Summary:Different mechanisms may exists as a means to provide additional or specialized enhancement of existing nanoparticulate pinning in YBa 2Cu 3O 7− x (YBCO) thin films. In the particular case of Y 2BaCuO 5 (Y211) nanoparticles, Ca-doping of these nanoparticles via addition to the Y211 target material provides an additional increase to the J c( H). YBCO + Y211 samples were created by pulsed laser deposition with alternating targets of YBCO with Y211 and Y211 doped with Ca. Initial indications suggest that this improvement in pinning results from some scattered short-ranged self-assembly of the nanoparticles into short nanocolumns.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2009.08.010