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Local Structure of Fe Impurity Atoms in ZnO: Bulk versus Surface
McLeod, J. A.,Boukhvalov, D. W.,Zatsepin, D. A.,Green, R. J.,Leedahl, B.,Cui, L.,Kurmaev, E. Z.,Zhidkov, I. S.,Finkelstein, L. D.,Gavrilov, N. V.,Cholakh, S. O.,Moewes, A. American Chemical Society 2014 The Journal of Physical Chemistry Part C Vol.118 No.10
<P>By studying Fe-doped ZnO pellets and thin films with various X-ray spectroscopic techniques, and complementing this with density functional theory calculations, we find that Fe-doping in bulk ZnO induces isovalent (and isostructural) cation substitution (Fe<SUP>2+</SUP> → Zn<SUP>2+</SUP>). In contrast to this, Fe-doping near the surface produces both isovalent and heterovalent substitution (Fe<SUP>3+</SUP> → Zn<SUP>2+</SUP>). The calculations performed herein suggest that the most likely defect structure is the single or double substitution of Zn with Fe, although, if additional oxygen is available, then Fe substitution with interstitial oxygen is even more energetically favorable. Furthermore, it is found that ferromagnetic states are energetically unfavorable, and ferromagnetic ordering is likely to be realized only through the formation of a secondary phase (i.e., ZnFe<SUB>2</SUB>O<SUB>4</SUB>), or codoping with Cu.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2014/jpccck.2014.118.issue-10/jp411219z/production/images/medium/jp-2013-11219z_0010.gif'></P>
The Co-Construction of Employment Relations in Semi-Professional Sport Leagues
Christopher M. McLeod,Calvin Nite 글로벌지식마케팅경영학회 2024 Journal of Global Sport Management Vol.9 No.1
Semi-professional leagues are increasingly used to develop athletes. However, what we know of athletes’ employment comes from research on professional athletes and does not translate to semi-professionalism. Thus, the purpose of this research was to explore how athletes and employers co-constructed employment relations in two new semi-professional rugby union leagues. Primary data consisted of 24 interviews with stakeholders and 30 surveys completed by athletes. Secondary data consisted of 36 publicly available interviews. Employers used control strategies to limit athletes’ pay and agency. Athletes and employers co-constructed role identity positions that promoted certain attitudes, expectations, and employee behaviors. Aspiring athletes constructed an athlete identity with employers, which favored symbolic rewards instead of pay. When athletes joined teams, they constructed a professional identity with employers. Role identity position construction has implications for research on semi-professional leagues and the study of athlete labor relations more generally.