TY - JOUR
T1 - Oxygen vacancies induced ferromagnetic behaviors in Co 3 O 4–δ : An experimental and first-principles study
AU - Wang, P.
AU - Jin, C.
AU - Li, P.
AU - Zheng, D.X.
AU - Gong, J.L.
AU - Bai, H.L.
N1 - KAUST Repository Item: Exported on 2020-04-23
Acknowledgements: This work was supported by National Natural Science Foundation of China (11774254, 11304221, and 51272174).
PY - 2018/6/15
Y1 - 2018/6/15
N2 - The structural and magnetic properties of CoO were investigated by both first-principles and experimental studies. The results of first-principles calculations indicate that the spin splitting induced by oxygen vacancies can lead to the net moment in the CoO. The density of states of CoO shows a band gap of 2.2 eV, while the impurity states appear with the oxygen vacancies. Furthermore, the CoO films with oxygen vacancies were grown on MgAlO and SrTiO substrates by using reactive sputtering. The structural analysis reveals that the CoO films are epitaxial. Consistent with the first-principles study, magnetism is observed in the CoO films, which attributes to the oxygen vacancies influencing spin structure by superexchange interaction.
AB - The structural and magnetic properties of CoO were investigated by both first-principles and experimental studies. The results of first-principles calculations indicate that the spin splitting induced by oxygen vacancies can lead to the net moment in the CoO. The density of states of CoO shows a band gap of 2.2 eV, while the impurity states appear with the oxygen vacancies. Furthermore, the CoO films with oxygen vacancies were grown on MgAlO and SrTiO substrates by using reactive sputtering. The structural analysis reveals that the CoO films are epitaxial. Consistent with the first-principles study, magnetism is observed in the CoO films, which attributes to the oxygen vacancies influencing spin structure by superexchange interaction.
UR - http://hdl.handle.net/10754/630739
UR - http://www.sciencedirect.com/science/article/pii/S0040609018304164
UR - http://www.scopus.com/inward/record.url?scp=85048823841&partnerID=8YFLogxK
U2 - 10.1016/j.tsf.2018.06.022
DO - 10.1016/j.tsf.2018.06.022
M3 - Article
AN - SCOPUS:85048823841
SN - 0040-6090
VL - 660
SP - 287
EP - 293
JO - Thin Solid Films
JF - Thin Solid Films
ER -