Nanoscopic netted structure of compositional modulation in (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors

A. Hu; I. Hirabayashi; M. Winter; M. R. Koblischka; U. Hartmann; H. Zhou

doi:10.1063/1.1871348

Nanoscopic netted structure of compositional modulation in (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors

A. Hu, I. Hirabayashi, M. Winter, M. R. Koblischka, U. Hartmann, H. Zhou

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

We report a nanoscaled crisscross network in high-quality melt-processed (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors investigated with atomic force microscopy (AFM) and transmission electron microscopy. In the ten-micrometer scale, such a net was unveiled as a consequence of crossing annular stripes originating from ordering compositional modulation. The AFM topographic images further displayed that this compositional stripe result in a surface modulation with a few-nanometer wavelength and roughness. The forming mechanism of this compositional stripe and its role as strong δ Tc -type pinning defects were discussed in the context of rare earth Ba oscillation around the stoichiometric ratio and the spatial fluctuation of local Tc values.

Original language	English
Article number	092505
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	9
DOIs	https://doi.org/10.1063/1.1871348
Publication status	Published - 2005 Feb 28
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Nanoscopic netted structure of compositional modulation in (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors",

abstract = "We report a nanoscaled crisscross network in high-quality melt-processed (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors investigated with atomic force microscopy (AFM) and transmission electron microscopy. In the ten-micrometer scale, such a net was unveiled as a consequence of crossing annular stripes originating from ordering compositional modulation. The AFM topographic images further displayed that this compositional stripe result in a surface modulation with a few-nanometer wavelength and roughness. The forming mechanism of this compositional stripe and its role as strong δ Tc -type pinning defects were discussed in the context of rare earth Ba oscillation around the stoichiometric ratio and the spatial fluctuation of local Tc values.",

author = "A. Hu and I. Hirabayashi and M. Winter and Koblischka, {M. R.} and U. Hartmann and H. Zhou",

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AU - Hu, A.

AU - Hirabayashi, I.

AU - Winter, M.

AU - Koblischka, M. R.

AU - Hartmann, U.

AU - Zhou, H.

N1 - Funding Information: This work was partially supported by Japanese Society for the Promotion of Science (JSPS) and New Energy Development Organization (NEDO). AFM images were processed with software WSxM©, free provided by Nanotec Electronica.

PY - 2005/2/28

Y1 - 2005/2/28

N2 - We report a nanoscaled crisscross network in high-quality melt-processed (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors investigated with atomic force microscopy (AFM) and transmission electron microscopy. In the ten-micrometer scale, such a net was unveiled as a consequence of crossing annular stripes originating from ordering compositional modulation. The AFM topographic images further displayed that this compositional stripe result in a surface modulation with a few-nanometer wavelength and roughness. The forming mechanism of this compositional stripe and its role as strong δ Tc -type pinning defects were discussed in the context of rare earth Ba oscillation around the stoichiometric ratio and the spatial fluctuation of local Tc values.

AB - We report a nanoscaled crisscross network in high-quality melt-processed (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors investigated with atomic force microscopy (AFM) and transmission electron microscopy. In the ten-micrometer scale, such a net was unveiled as a consequence of crossing annular stripes originating from ordering compositional modulation. The AFM topographic images further displayed that this compositional stripe result in a surface modulation with a few-nanometer wavelength and roughness. The forming mechanism of this compositional stripe and its role as strong δ Tc -type pinning defects were discussed in the context of rare earth Ba oscillation around the stoichiometric ratio and the spatial fluctuation of local Tc values.

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Nanoscopic netted structure of compositional modulation in (Sm0.33 Eu0.33 Gd0.33) Ba2 Cu3 O7-δ superconductors

Abstract

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