Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1800920 | Journal of Magnetism and Magnetic Materials | 2010 | 5 Pages |
Abstract
Exchange bias (EB) and magnetic properties of ferrimagnetic (FI) NiFe2O4 and antiferromagnetic (AFM) NiO bulk composites, prepared by a chemical co-precipitation and post-thermal decomposition method from Fe-doped NiO matrix, have been investigated. Enhanced coercivities and shifted hysteresis loops are still observed for these samples after field cooling. But the vertical magnetization shifts are not observed. In comparison with the bulk samples, a NiO/10% NiFe2O4 nanocomposite was also prepared via direct mixture, in which both the horizontal and vertical shift in the hysteresis loops are observed at 10Â K. The observed phenomena are explained in terms of interfacial exchange interaction between the two phases and the finite-size effect, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J.H. He, S.L. Yuan, S.Y. Yin, K.L. Liu, P. Li, C.H. Wang, L. Liu, J.Q. Li, Z.M. Tian,