Oxygen vacancies induced ferromagnetic behaviors in Co 3 O 4–δ : An experimental and first-principles study

P. Wang, C. Jin, P. Li, D.X. Zheng, J.L. Gong, H.L. Bai

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.
Original languageEnglish (US)
Pages (from-to)287-293
Number of pages7
JournalThin Solid Films
Volume660
DOIs
StatePublished - Jun 15 2018

Fingerprint

Dive into the research topics of 'Oxygen vacancies induced ferromagnetic behaviors in Co 3 O 4–δ : An experimental and first-principles study'. Together they form a unique fingerprint.

Cite this