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Direct evidence for Sb as a Zn site impurity in ZnO

The lattice location of ion implanted antimony in zinc oxide has been determined by means of $\beta^{-}$-emission channeling from the radioactive $^{124}$Sb isotope. Following 30 keV implantation of $^{124}$Sb into a single-crystalline ZnO sample to a fluence of $1 \times 10^{14}$ cm$^{−2}$, the ang...

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Detalles Bibliográficos
Autores principales: Wahl, U, Correia, J G, Mendonça, T, Decoster, S
Lenguaje:eng
Publicado: 2009
Materias:
Acceso en línea:https://dx.doi.org/10.1063/1.3159474
http://cds.cern.ch/record/1270846
Descripción
Sumario:The lattice location of ion implanted antimony in zinc oxide has been determined by means of $\beta^{-}$-emission channeling from the radioactive $^{124}$Sb isotope. Following 30 keV implantation of $^{124}$Sb into a single-crystalline ZnO sample to a fluence of $1 \times 10^{14}$ cm$^{−2}$, the angular-dependent emission rate of $\beta^{-}$−particles around several crystallographic directions was measured with a position-sensitive Si detector. The majority of Sb was found to occupy Zn sites, with the possible fraction on O sites being at maximum 5%–6%.