Optical Writing and Erasing of Magnetic Domain Patterns on a Ferrite-Garnet Film(MORIS 2007 Workshop on Thermal & Optical Magneitc Materials and Devices)
スポンサーリンク
概要
- 論文の詳細を見る
We present experiments on optical writing and erasing of microscopic magnetic domain patterns on an epitaxial ferrite-garnet film. The film is initially uniformly magnetized normally to the surface. A weak constant magnetic field pointing in the same direction as the magnetization is applied, and magnetic domain patterns are written and erased by locally heating the film with a pulsed focused laser beam. For switching the magnetization, in both directions, only the beam diameter and the peak power of the laser pulse need to be controlled; the direction and strength of the external magnetic field are kept unchanged. The switching is essentially all-optical, which widens the area of potential applications of the method. We also show that domain patterns can be optically recorded in multilayered ferrite-garnet samples. Large Faraday-rotation angles in our films enable both spatial and temporal observations of the magnetization reversal.
- 社団法人日本磁気学会の論文
- 2008-03-01
著者
-
JOHANSEN T.
Department of Physics, University of Oslo
-
Johansen T.
Department Of Physics University Of Oslo
-
Shevchenko A.
Optics and Molecular Materials and Center for New Materials, Helsinki University of Technology (TKK)
-
Korppi M.
Optics and Molecular Materials and Center for New Materials, Helsinki University of Technology (TKK)
-
Lindfors K.
Optics and Molecular Materials and Center for New Materials, Helsinki University of Technology (TKK)
-
Kaivola M.
Optics and Molecular Materials and Center for New Materials, Helsinki University of Technology (TKK)
-
Korppi M.
Optics And Molecular Materials And Center For New Materials Helsinki University Of Technology (tkk)
-
Shevchenko A.
Optics And Molecular Materials And Center For New Materials Helsinki University Of Technology (tkk)
-
Johansen T.
Department Of Physics Univ. Of Oslo
-
Kaivola M.
Optics And Molecular Materials And Center For New Materials Helsinki University Of Technology (tkk)
-
Lindfors K.
Optics And Molecular Materials And Center For New Materials Helsinki University Of Technology (tkk)
関連論文
- Temperature Dependence of the Flux Jump Upper Threshold Field in MgB_2 Thin Films(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Magneto-optical Indicator Garnet Films Grown by Metal-organic Decomposition Method(MORIS 2007 Workshop on Thermal & Optical Magneitc Materials and Devices)
- Optical Writing and Erasing of Magnetic Domain Patterns on a Ferrite-Garnet Film(MORIS 2007 Workshop on Thermal & Optical Magneitc Materials and Devices)
- Temperature Dependence of the Flux Jump Upper Threshold Field in MgB_2 Thin Films(Condensed matter: electronic structure and electrical, magnetic, and optical properties)