Publisher's Note: “Absence of ferromagnetic order in high quality bulk Co-doped ZnO samples” [J. Appl. Phys. 108, 033914 (2010)]

Synchrotron photoemission study of (Zn,Co)O films with uniform Co distribution

“…Diluted magnetic semiconductors (DMS) have been recently intensively studied for spintronic applications (Bonanni and Dietl, 2010;Ueda et al, 2001) and ZnCoO focuses a great part of attention here (Khare et al, 2006;Assadi et al, 2009;De Carvalho et al, 2010;Zhang et al, 2009;Gilliland et al, 2010). This is possible because high cobalt concentration in ZnO is expected due to the nearly identical Co 2 þ and Zn 2 þ ionic radii.…”

Structural, optical, and magnetic properties of Co-doped ZnO nanorods fabricated by a facile solution route

“…Transition metal doping of ZnO has become an active research field ever since it was predicted to improve the optical and electronic properties of the oxide material, and particularly, lead to room-temperature ferromagnetism. Among these, the element of Co is considered a potential candidate for incorporating into ZnO because of its abundant electron states and large solubility in the ZnO matrix [10].…”

Investigation of structural and optical properties in Cobalt–Chromium co-doped ZnO thin films within the Lattice Compatibility Theory scope

“…In particular, the group IB transition element, Chromium and IIIB element Cobalt with electronic shell structure, has many physical and chemical properties similar to those of Zn [14]. Among these, the element of Co is considered a potential candidate for incorporating into ZnO because of its abundant electron states, close ionic radius of Co 2+ (0.072 nm) to that of Zn 2+ (0.074 nm), and large solubility in the ZnO matrix [15]. Co doped ZnO achieves the highest rate of visible-light degradation of methylene blue (MB) because it has the highest number of surface oxygen defects [16].…”