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Self-assembled strontium ferrite dot array on Au underlayer
- Source :
-
Journal of Magnetism & Magnetic Materials . Jul2010, Vol. 322 Issue 14, p2043-2046. 4p. - Publication Year :
- 2010
-
Abstract
- Abstract: Strontium ferrite (SrM) thin films were deposited on thermally oxidized silicon wafer with Au underlayer. Gold underlayers were prepared at various substrate temperatures by using a magnetron sputtering system. C-axis oriented SrM perpendicular films and preferred (111) orientation of underlayer have confirmed by X-ray diffraction patterns. The intensity of (111) diffraction line for Au and that of (00 l) diffraction line for strontium ferrite decrease with increase in substrate temperature (T u) The maximum coercivity and remanent squareness ratio in perpendicular direction, at T u of 500°C, are 5.4kOe and 0.68, respectively. The strength of the intergranular interaction of SrM magnetic particles is described by the parameter Δm. The SrM/Au films prepared at T u above 100°C have smaller Δm peak values than that for SrM/Au films prepared at T u of room temperature. This behavior is related to low magnetostatic coupling between the magnetic particles separated by the non-magnetic amorphous phase. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 322
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 49825891
- Full Text :
- https://doi.org/10.1016/j.jmmm.2010.01.031