Open AccessAtomic structure of Mn-rich nanocolumns probed by x-ray absorption spectroscopy
Author(s) -
Mauro Rovezzi,
Thibaut Devillers,
Emmanuel Arras,
F. D’Acapito,
A. Barski,
M. Jamet,
Pascal Pochet
Publication year - 2008
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2949077
Subject(s) - extended x ray absorption fine structure , surface extended x ray absorption fine structure , absorption (acoustics) , tetrahedron , molecular beam epitaxy , spectroscopy , materials science , x ray spectroscopy , crystallography , absorption spectroscopy , x ray absorption spectroscopy , chemistry , epitaxy , optics , nanotechnology , physics , layer (electronics) , quantum mechanics , composite material
In this letter, we have used the extended x-ray-absorption fine-structure (EXAFS) technique to investigate the structure of Mn-rich self-organized nanocolumns grown by low temperature molecular beam epitaxy. The EXAFS analysis has shown that Mn-rich nanocolumns exhibit a complex local structure that cannot be described by a simple substitutional model. Additional interatomic distances had to be considered in the EXAFS model which are in excellent agreement with the structure of a Ge–3Mn building block tetrahedron of Ge3Mn5.
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