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 journalArticleResearchpeer-review

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 journalArticleResearchpeer-review

TY - JOUR

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AU - Gossmann, H. J.

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