All-optical reversible switching of local magnetization
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Journal Title
Journal ISSN
Volume Title
School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2007
Major/Subject
Mcode
Degree programme
Language
en
Pages
041916
Series
Applied Physics Letters, Volume 91, Issue 4
Abstract
The authors demonstrate all-optical reversible switching of the magnetization direction in a uniformly magnetized ferrite-garnet film. The magnetization is switched by locally heating the film with a pulsed laser beam. The direction to which the magnetization flips is controlled by two parameters, the beam diameter and the pulse energy, and not by the direction of the external magnetic field. In the experiments, neither the magnitude nor the direction of the external magnetic field is changed. The results of this work illustrate the richness of optical methods to locally control the properties of magnetic materials and suggest all-optical device applications.Description
Keywords
magnetic films, Faraday effect, magnetic fields, laser beams, polarization, magnetization direction, switching, bismuth-substituted ferrite garnets, heating
Citation
Shevchenko, Andriy & Korppi, Maria & Lindfors, Klas & Heiliö, Miika & Kaivola, Matti & Il’yashenko, Eugene. & Johansen, Tom H.. 2007. All-optical reversible switching of local magnetization. Applied Physics Letters. Volume 91, Issue 4. 041916. ISSN 0003-6951 (printed). DOI: 10.1063/1.2760163.
