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Tunable room temperature ferromagnetism in Sn0.93Fe0.05M0.02O2−σ (M=Sb/Mg): The role of electron- and hole-doping
- Source :
-
Journal of Alloys & Compounds . Apr2011, Vol. 509 Issue 15, p5008-5011. 4p. - Publication Year :
- 2011
-
Abstract
- Abstract: Bulk polycrystalline Sn0.95Fe0.05O2−σ and Sn0.93Fe0.05M0.02O2−σ (M=Sb/Mg) samples were fabricated. Detailed X-ray diffraction and transmission electron microscopy analyses revealed that the dopants most probably replaced the Sn in SnO2 structure, instead of forming impurity phase or nanocluster. By varying the dopant M (Sb/Mg), the electron- (Sb) and hole- (Mg) doping effect on the magnetic properties of Sn0.93Fe0.05M0.02O2−σ was investigated. Compared with Sn0.95Fe0.05O2−σ , the saturation magnetization decreased after doping with Sb and increased after doping with Mg. The changes of Fe oxidation state and carrier type, discovered from X-ray photoelectron spectroscopy, are believed to be responsible for the co-doping tuned ferromagnetism in Sn0.93Fe0.05M0.02O2−σ . [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 509
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 59326031
- Full Text :
- https://doi.org/10.1016/j.jallcom.2011.01.211