Nanostructures and thin films of transparent conductive oxides studied by perturbed angular correlations. Issue 4 (3rd April 2013)

• Record Type: Journal Article
• Authors: Barbosa, M. B.; Gonçalves, J. N.; Redondo‐Cubero, A.; Miranda, S. M. C.; Simon, R.; Kessler, P.; Brandt, M.; Henneberger, F.; Nogales, E.; Méndez, B.; Johnston, K.; Alves, E.; Vianden, R.; Araújo, J. P.; Lorenz, K.; Correia, J. G.
• Is Part Of: Physica status solidi. Volume 250:Issue 4(2013:Apr.)
• Page Start: 801
• Page End: 808
• Publication Date: 2013-04-03
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201200923
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The versatility of perturbed angular correlations (PAC) in the study of nanostructures and thin films is demonstrated, namely for the specific cases of ZnO/Cd_{<italic>x</italic>}Zn_{1−<italic>x</italic>}O thin films and Ga₂O₃ powder pellets and nanowires, examples of transparent conductive oxides. PAC measurements as a function of annealing temperature were performed after implantation of ^{111<italic>m</italic>}Cd/¹¹¹Cd (<italic>T</italic>_1/2 = 48 min) and later compared to density functional theory simulations. For ZnO, the substitution of Cd probes at Zn sites was observed, as well as the formation of a probe‐defect complex. The ternary Cd_{<italic>x</italic>}Zn_{1−<italic>x</italic>}O (<italic>x</italic> = 0.16) showed good macroscopic crystal quality but revealed some clustering of local defects around the probe Cd atoms, which could not be annealed. In the Ga₂O₃ samples, the substitution of the Cd probes in the octahedral Ga‐site was observed, demonstrating the potential of ion‐implantation for the doping of nanowires.</p> </abstract>