Cation termination at ion-polished and chemically etched (001)YBa 2Cu3O7 crystal surfaces: An ion channeling study

A. T. Fiory, A. F. Hebard, R. H. Eick, Lynn Schneemeyer, J. V. Waszczak, H. J. Gossmann

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Local cation order approaching ideal bulk termination was found for cleaned (001) surfaces of YBa2Cu3O7 crystals by ion-channeling surface-peak analysis. Surfaces etched in dilute CH 3OH:Br2 and ultrasonically agitated in CH3OH to dislodge the Br2 appear terminated preferentially by the Cu-O "double-plane" sequence, containing less than 1/2-cation monolayer of surface disorder. Planar polishing with ion beams incident at a glancing angle on a rotating crystal leaves residual disorder as low as ∼8 Å, damage which is readily removed by a light chemical etch.

Original languageEnglish
Pages (from-to)777-779
Number of pages3
JournalApplied Physics Letters
Volume58
Issue number7
DOIs
StatePublished - 1 Dec 1991

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crystal surfaces
cations
ions
disorders
polishing
leaves
crystals
ion beams
methylidyne
damage

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Fiory, A. T. ; Hebard, A. F. ; Eick, R. H. ; Schneemeyer, Lynn ; Waszczak, J. V. ; Gossmann, H. J. / Cation termination at ion-polished and chemically etched (001)YBa 2Cu3O7 crystal surfaces : An ion channeling study. In: Applied Physics Letters. 1991 ; Vol. 58, No. 7. pp. 777-779.
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Cation termination at ion-polished and chemically etched (001)YBa 2Cu3O7 crystal surfaces : An ion channeling study. / Fiory, A. T.; Hebard, A. F.; Eick, R. H.; Schneemeyer, Lynn; Waszczak, J. V.; Gossmann, H. J.

In: Applied Physics Letters, Vol. 58, No. 7, 01.12.1991, p. 777-779.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Gossmann, H. J.

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