@inproceedings{inproceedings30715d9f, title = {Absence of magnetic ordering in high quality bulk co-doped ZnO}, author = {Godoy, M P F de and Chitta, Valmir Antonio and Ortiz de Zevallos, Angela Maria and Iikawa, Fernando and Brasil, Maria José Santos Pompeu and Ferraz, W B and Pais, R W D and Costa, G M da and Sabioni, A C S and Carvalho, H B de}, year = {2009}, publisher = {ICAM}, booktitle = {International Conference on Advanced Materials} }