Stichting Katholieke Universiteit

Radboud Universiteit Nijmegen

Alexey Kimel

Theodorus Henricus Maria Rasing

Akiyoshi Itoh

Fredrik Hansteen

Andrei Ivanovitch Kiriliouk

Claudiu Daniel Stanciu

Arata Tsukamoto

Johan Mentink

Andrei Kirilyuk

Richard Francis Llewelyn Evans

Roy William Chantrell

Thomas Andrew Ostler

Joseph Barker

A method of magnetization reversal, time stable ferrimagnetic material, a product and a domain comprising said material, a system for magnetization reversal, and information storage. Therein, a ferrimagnetic material is one in which magnetic moments of the atoms on different sublattices are opposed, as in antiferromagnetism; however, in ferrimagnetic materials, the opposing moments are unequal and a spontaneous magnetization remains.

Magnetization reversal

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.

Magneto-optical switching device and method for switching a magnetizable medium

Growing community of inventors

Nijmegen, Netherlands

Alexey Kimel