Title of article
Decomposition of the five-fold surface of Al70Pd21Mn9 at elevated temperature
Author/Authors
Ledieu، نويسنده , , J and Muryn، نويسنده , , C.A. and Thornton، نويسنده , , G and Cappello، نويسنده , , G and Chevrier، نويسنده , , J and Diehl، نويسنده , , R.D. and Lograsso، نويسنده , , T.A. and Delaney، نويسنده , , D and McGrath، نويسنده , , R، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
3
From page
871
To page
873
Abstract
Several surface phases have previously been identified on the five-fold surface of the Al70Pd21Mn9 quasicrystal. Two of these, the clustered and terraced phases, have been discovered by scanning tunnelling microscopy (STM) studies. In this paper, we report STM images showing the existence of a new phase on this surface. This new topography was obtained by annealing the sample close to its melting point for several minutes. A model is presented which exhibits the main features of the structure. The unit-cell dimensions match those of the Al3Mn orthorhombic phase. Mechanical polishing followed by sputtering and annealing restored a pentagonal quasicrystalline surface indicating that the decomposition is a near-surface phenomenon.
Keywords
surface , Al70Pd21Mn9 , Al3Mn , Quasicrystals , STM
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2000
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2136542
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