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

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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
Issue number7
StatePublished - Dec 1 1991

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Cation termination at ion-polished and chemically etched (001)YBa <sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> crystal surfaces: An ion channeling study'. Together they form a unique fingerprint.

Cite this