Correlative theoretical and experimental investigation of the formation of AlYB14 and competing phases | Zendy

O. Hunold | Zendy; YenTing Chen | Zendy; Denis Mušić | Zendy; Per O. Å. Persson | Zendy; Daniel Primetzhofer | Zendy; Moritz to Baben | Zendy; Jan-Ole Achenbach | Zendy; Philipp Keuter | Zendy; Jochen M. Schneider | Zendy

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Correlative theoretical and experimental investigation of the formation of AlYB14 and competing phases

Author(s) -

O. Hunold,

YenTing Chen,

Denis Mušić,

Per O. Å. Persson,

Daniel Primetzhofer,

Moritz to Baben,

Jan-Ole Achenbach,

Philipp Keuter,

Jochen M. Schneider

Publication year - 2016

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4942664

Subject(s) - boron , elastic recoil detection , impurity , electron diffraction , phase (matter) , ternary operation , sputter deposition , materials science , crystallography , spectroscopy , diffraction , chemistry , analytical chemistry (journal) , sputtering , chemical physics , thin film , nanotechnology , physics , organic chemistry , chromatography , quantum mechanics , computer science , optics , programming language

The phase formation in the boron-rich section of the Al-Y-B system has been explored by a correlative theoretical and experimental research approach. The structure of coatings deposited via high power pulsed magnetron sputtering from a compound target was studied using elastic recoil detection analysis, electron energy loss spectroscopy spectrum imaging, as well as X-ray and electron diffraction data. The formation of AlYB14 together with the (Y,Al)B-6 impurity phase, containing 1.8 at. % less B than AlYB14, was observed at a growth temperature of 800 degrees C and hence 600 degrees C below the bulk synthesis temperature. Based on quantum mechanical calculations, we infer that minute compositional variations within the film may be responsible for the formation of both icosahedrally bonded AlYB14 and cubic (Y,Al)B-6 phases. These findings are relevant for synthesis attempts of all boron rich icosahedrally bonded compounds with the space group: Imma that form ternary phases at similar compositions. (C) 2016 AIP Publishing LLC.

Funding Agencies|Deutsche Forschungsgemeinschaft within the Collaborative Research Center [SFB-TR 87/2]; JARA-HPC from RWTH Aachen University [JARA0131]; Knut and Alice Wallenberg Foundation

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