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; L. F. Schneemeyer; J. V. Waszczak; H. J. Gossmann

doi:10.1063/1.104515

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, L. F. Schneemeyer, J. V. Waszczak, H. J. Gossmann

Chemistry and Biochemistry

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11 Scopus citations

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 language	English
Pages (from-to)	777-779
Number of pages	3
Journal	Applied Physics Letters
Volume	58
Issue number	7
DOIs	https://doi.org/10.1063/1.104515
State	Published - 1991

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

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 {\AA}, damage which is readily removed by a light chemical etch.",

author = "Fiory, {A. T.} and Hebard, {A. F.} and Eick, {R. H.} and Schneemeyer, {L. F.} and Waszczak, {J. V.} and Gossmann, {H. J.}",

year = "1991",

doi = "10.1063/1.104515",

language = "English",

volume = "58",

pages = "777--779",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Cation termination at ion-polished and chemically etched (001)YBa 2Cu3O7 crystal surfaces

T2 - An ion channeling study

AU - Fiory, A. T.

AU - Hebard, A. F.

AU - Eick, R. H.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

AU - Gossmann, H. J.

PY - 1991

Y1 - 1991

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=51149203915&partnerID=8YFLogxK

U2 - 10.1063/1.104515

DO - 10.1063/1.104515

M3 - Article

AN - SCOPUS:51149203915

SN - 0003-6951

VL - 58

SP - 777

EP - 779

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 7

ER -

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

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