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Local structure in Ga1xInxSe alloys

Abstract: In this work we study the local structure of layeredGa1xInxSealloys by means of X-ray Absorption. Wecomplement our research with a Raman study. The available alloys have compositions close to the hostbinaries. The dependence of XANES (X-ray Near Edge Structure) features with synchrotron polarizationclearly establishes the substitutional character of the alloying cations. Interstitial atoms, if present,remain under the detection limit of the technique. EXAFS (Extended X-ray Absorption Fine Structure)demonstrates the existence ofGaInbonds in the alloys. The cation-anion bond-lengths in the alloysremain similar to that of the pure compounds. There is no significant increase of the static disorder. Thebasic features of Raman spectra are those of the pure compounds, with the Raman peaks shiftingcontinuously as the impurity cation is introduced. New features associated to defects are discussed.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Journal of Alloys and Compounds Volume 852, 25 January 2021, 156365

Editorial: Elsevier Ltd

 Fecha de publicación: 25/01/2021

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.jallcom.2020.156365

ISSN: 0925-8388,1873-4669

Proyecto español: MAT2016-75586-C4-1-P ; PID2019-106383GB-C41 ; TEC2017-85912-C2

Url de la publicación: https://doi.org/10.1016/j.jallcom.2020.156365