Ba2YCu3O7-δ crystal surface layers: Orthorhombic splitting, dislocations, and chemical etching

D. J. Werder, C. H. Chen, M. Gurvitch, B. Miller, L. F. Schneemeyer, J. V. Waszczak

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We find by transmission electron diffraction that the orthorhombic splitting of the upper surface layers ( <1 μm) of single crystal Ba2YCu3O7-δ is reduced, differing by 10 to 30 percent from the bulk value. We also find by transmission electron microscopy that in general the surfaces are of inferior quality and, thus, not representative of the bulk. These results have important consequences for those experiments that probe only the upper surface layers. By etching with Br/ethanol and HClO4/NaClO4 the poor quality surfaces are removed.

Original languageEnglish
Pages (from-to)411-416
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume160
Issue number5-6
DOIs
StatePublished - 1 Oct 1989

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Dislocations (crystals)
crystal surfaces
Etching
surface layers
etching
Crystals
ethyl alcohol
electron diffraction
Electron diffraction
transmission electron microscopy
Surface properties
probes
single crystals
Ethanol
Single crystals
Transmission electron microscopy
Experiments

Cite this

Werder, D. J. ; Chen, C. H. ; Gurvitch, M. ; Miller, B. ; Schneemeyer, L. F. ; Waszczak, J. V. / Ba2YCu3O7-δ crystal surface layers : Orthorhombic splitting, dislocations, and chemical etching. In: Physica C: Superconductivity and its applications. 1989 ; Vol. 160, No. 5-6. pp. 411-416.
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Ba2YCu3O7-δ crystal surface layers : Orthorhombic splitting, dislocations, and chemical etching. / Werder, D. J.; Chen, C. H.; Gurvitch, M.; Miller, B.; Schneemeyer, L. F.; Waszczak, J. V.

In: Physica C: Superconductivity and its applications, Vol. 160, No. 5-6, 01.10.1989, p. 411-416.

Research output: Contribution to journalArticle

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T2 - Orthorhombic splitting, dislocations, and chemical etching

AU - Werder, D. J.

AU - Chen, C. H.

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AU - Waszczak, J. V.

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