PaperAApplied Physics A2d agoCoupled optical band gap narrowing and defect-mediated ferromagnetism in Er-doped ZnO nanofibersTooba Baig·M. Maqbool·Neelam Israr·S. Qaseem·Rashdah Shamim·M. NaeemRead at Applied Physics AShareLess like thisTagsZnO doping and propertiesMaterials Chemistry