Health & Environmental Research Online (HERO)


Print Feedback Export to File
3717890 
Journal Article 
Valence state-dependent ferromagnetism in Mn-doped NiO thin films 
Yan, W; Sun, Z; Li, Z; Liu, Q; Yao, T; Pan, Z; Wang, C; Hu, F; Jiang, Y; Qi, Z; Zeng, F; Wei, S 
2012 
Yes 
Advanced Materials
ISSN: 0935-9648
EISSN: 1521-4095 
24 
3 
353-357 
English 
22105946 
Manipulating the ferromagnetism of diluted magnetic semiconductors by tuning the valence state of doped ions is found to be achievable in Mn-doped NiO. First-principles calculations predict that the interactions between substitutional Mn(3+) ions in NiO are ferromagnetic, while the Mn(2+)-Mn(2+) interactions are antiferromagnetic. This scenario is experimentally supported by a great enhancement of saturation magnetization with increased Mn(3+)/Mn(2+) ratio in Mn-doped and (Mn, Li)-codoped NiO.