Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2006-05-24
2011-11-08
Neyzari, Ali (Department: 2627)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
Reexamination Certificate
active
08054713
ABSTRACT:
The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for imparting angular momentum to the magnetic spin system of said magnetizable medium, so as to selectively orient the magnetization of said medium. In addition, the invention relates to a method of switching a magnetizable medium, comprising providing a magnetizable medium; providing a radiation beam of a selectively chosen angular momentum; and targeting said radiation beam to said medium so as to transfer said angular momentum to a magnetic spin system of said magnetizable medium. Accordingly, spin states in magnetic materials can be manipulated using radiation of a suitable angular momentum. An effective magnetic field is generated for orienting the magnetization of the domains and can simultaneously be used to locally heat the material.
REFERENCES:
patent: 6894954 (2005-05-01), Aoki
patent: 105 344 (1974-04-01), None
patent: WO 2007/064540 (2007-06-01), None
A.V. Kimel, et al. “Ultrafst non-thermal control of magnetization by instantaneous photomagnetic pulses” Nature, vol. 435, No. 2, May 25, 2005, pp. 655-657.
International Search Report for PCT/NL2006/000264 dated Jan. 22, 2007.
Hansteen Fredrik
Itoh Akiyoshi
Kimel Alexey Voldemarovitsj
Kiriliouk Andrei Ivanovitch
Rasing Theodorus Henricus Maria
Leydig , Voit & Mayer, Ltd.
Neyzari Ali
Stichting Katholieke Universiteit
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