| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1333260 | Journal of Solid State Chemistry | 2010 | 5 Pages |
Magnetic properties of Cr-doped SnO2 and the effects of oxygen vacancy (VO) on the magnetic properties are examined to understand the origin of ferromagnetism in Cr-doped SnO2 and explain the observed discrepant phenomena. Cr-doped SnO2 shows a p–d hopping ferromagnetic interaction that decreases gradually with the increase in Cr–Cr distance. In Cr-doped SnO2 with VO, ferromagnetic interaction is obviously weakened. Exchange constants indicate that the ferromagnetic exchange interaction in Cr-doped SnO2 is similar to that in Co-doped SnO2, while it is similar to that in Fe-doped SnO2 and/or undoped SnO2 with tin vacancy (VSn) in the presence of VO.
Graphical AbstractWe studied the magnetic properties in Cr-doped SnO2 by means of the first-principles calculations. It indicated that introduction of oxygen vacancy obviously weakened the ferromagnetic coupling, which could give a rational explanation for the discrepancies in experimental observations.Figure optionsDownload full-size imageDownload as PowerPoint slide
