![Enhanced ferromagnetism in grain boundary of Co-doped ZnO films: A magnetic force microscopy study]()
Enhanced ferromagnetism in grain boundary of Co-doped ZnO films: A magnetic force microscopy studyLin, M. N.; Hsu, H. S.; Lai, J. Y.; Guo, M. C.; Lin, C. Y.; Li, G. Y.; Chen, F. Y.; Huang, J. J.; Chen, S. F.; Liu, C. P.; Huang, J. C. A. · Applied Physics Letters · 2011