Recent progress on compositional nanostripes of REBa2Cu 3O7-δ (RE ≤ Sm,Eu,Gd) superconductors

A. Hu, Michael Rudolf Koblischka, X. Yao, H. Zhou, M. Winter, U. Hartmann, Masato Murakami

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We characterized ordered compositional fluctuation in high-quality SmBa2Cu3O7-δ, (Sm0.5Eu 0.5)Ba2Cu3O7-δ, and (Sm 0.33Eu0.33Gd0.33)Ba2Cu 3O7-δ superconductors by atomic force microscopy, scanning tunnelling microscopy, and transmission electron microscopy. The presence of nanostripes along the crystalline c direction was confirmed in SmBa2Cu3O7-δ single crystals and in melt-processed (Sm0.5Eu0.5)Ba2Cu 3O7-δ, (Sm0.33Eu0.33Gd 0.33)Ba2Cu3O7-δ materials. Meanwhile, thickness fringes originating from the twin boundaries were also identified in some samples; these could be clearly separated from real nanostripes with sample tilting. Compositional nanostripes displayed spatial variation in both shape and wavelength over a large area of RE-Ba-Cu-O single domains. The origin of the nanostripe is discussed in the context of the competitive growth mechanism of RE1+xBa2-xCu 3O7-δ solid solution.

Original languageEnglish
JournalSuperconductor Science and Technology
Volume19
Issue number7
DOIs
Publication statusPublished - 2006 Jul

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Scanning tunneling microscopy
Superconducting materials
Solid solutions
Atomic force microscopy
Single crystals
Crystalline materials
Transmission electron microscopy
Wavelength
scanning tunneling microscopy
solid solutions
atomic force microscopy
transmission electron microscopy
single crystals
wavelengths
Direction compound

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Recent progress on compositional nanostripes of REBa2Cu 3O7-δ (RE ≤ Sm,Eu,Gd) superconductors. / Hu, A.; Koblischka, Michael Rudolf; Yao, X.; Zhou, H.; Winter, M.; Hartmann, U.; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 19, No. 7, 07.2006.

Research output: Contribution to journalArticle

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AU - Zhou, H.

AU - Winter, M.

AU - Hartmann, U.

AU - Murakami, Masato

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AB - We characterized ordered compositional fluctuation in high-quality SmBa2Cu3O7-δ, (Sm0.5Eu 0.5)Ba2Cu3O7-δ, and (Sm 0.33Eu0.33Gd0.33)Ba2Cu 3O7-δ superconductors by atomic force microscopy, scanning tunnelling microscopy, and transmission electron microscopy. The presence of nanostripes along the crystalline c direction was confirmed in SmBa2Cu3O7-δ single crystals and in melt-processed (Sm0.5Eu0.5)Ba2Cu 3O7-δ, (Sm0.33Eu0.33Gd 0.33)Ba2Cu3O7-δ materials. Meanwhile, thickness fringes originating from the twin boundaries were also identified in some samples; these could be clearly separated from real nanostripes with sample tilting. Compositional nanostripes displayed spatial variation in both shape and wavelength over a large area of RE-Ba-Cu-O single domains. The origin of the nanostripe is discussed in the context of the competitive growth mechanism of RE1+xBa2-xCu 3O7-δ solid solution.

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