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

A. Hu; M. R. Koblischka; X. Yao; H. Zhou; M. Winter; U. Hartmann; M. Murakami

doi:10.1088/0953-2048/19/7/S31

Recent progress on compositional nanostripes of REBa₂Cu ₃O_7-δ (RE ≤ Sm,Eu,Gd) superconductors

A. Hu, M. R. Koblischka, X. Yao, H. Zhou, M. Winter, U. Hartmann, M. Murakami

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

8 Citations (Scopus)

Abstract

We characterized ordered compositional fluctuation in high-quality SmBa₂Cu₃O_7-δ, (Sm_0.5Eu _0.5)Ba₂Cu₃O_7-δ, and (Sm _0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_7-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 SmBa₂Cu₃O_7-δ single crystals and in melt-processed (Sm_0.5Eu_0.5)Ba₂Cu ₃O_7-δ, (Sm_0.33Eu_0.33Gd _0.33)Ba₂Cu₃O_7-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 RE_1+xBa_2-xCu ₃O_7-δ solid solution.

Original language	English
Pages (from-to)	S580-S584
Journal	Superconductor Science and Technology
Volume	19
Issue number	7
DOIs	https://doi.org/10.1088/0953-2048/19/7/S31
Publication status	Published - 2006 Jul 1

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/19/7/S31

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

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.",

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AU - Hu, A.

AU - Koblischka, M. R.

AU - Yao, X.

AU - Zhou, H.

AU - Winter, M.

AU - Hartmann, U.

AU - Murakami, M.

PY - 2006/7/1

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N2 - 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.

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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Recent progress on compositional nanostripes of REBa₂Cu ₃O_7-δ (RE ≤ Sm,Eu,Gd) superconductors

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