Centre National De La Recherche Scientifique

UniversitÉde Strasbourg

The Provost, Fellows, Foundation Scholars, and the Other Members of Board, of the College of the Holy and Undivided Trinity of Queen Elizabeth Near Dublin

Magnetic Solutions (holdings) Limited

The Provost, Fellows, Foundation Scholars, and the Other Members of Board, of the College of the Holy and Undivided Trinity of Queen Elizabeth College Green

John Michael David Coey

David Hurley

Bernard Doudin

Thomas Marinus Hermans

Arne Brataas

Davide Betto

Peter Dunne

Karsten Rode

Roberto Troncoso

Plamen Stamenov

Yong Chang Lau

A method and system for generating voltage and/or current oscillations in a single magnetic layer is provided. The method comprises applying a direct voltage/current to the layer in a longitudinal direction; and developing a longitudinal voltage between a pair of longitudinal voltage leads and/or a transverse voltage between a pair of transverse voltage leads. The magnetic layer comprises a ferrimagnetic or antiferrimagnetic material having a first and second magnetic sub-lattice, wherein the first sub-lattice is a dominant sub-lattice such that the charge carriers at the Fermi energy originate predominantly from the dominant sub-lattice and the charge carriers at the Fermi energy are spin polarised. In some embodiments, the dominant current carrying sub-lattice may lack inversion symmetry.

Single magnetic-layer microwave oscillator

Disclosed is a device including at least one circulating zone and at least one fluid including at least one more-paramagnetic liquid and at least one less-paramagnetic liquid forming a liquid-liquid interphase, the device including at least one element generating, in the circulating zone, a magnetic field, wherein the less-paramagnetic liquid is surrounded by the more-paramagnetic liquid in the circulating zone or wherein the more-paramagnetic liquid is surrounded by the less-paramagnetic liquid in the circulating zone. Also disclosed is a method including circulating at least one less-paramagnetic liquid inside one or more circulating zones of a device including at least one circulating zone and at least one more-paramagnetic liquid in the circulating zone.

Device and method for circulating liquids

A device ( ) for generating a variable composite magnetic field comprises top and bottom concentric ring members ( ) which define a main central axis ( ) and a central area ( ) within which the composite magnetic filed is formed. Rod-like permanent magnets are located thin respective annuli ( ) of the respective ring members ( ), and are equi-spaced circumferentially along a pitched circle ( ). The permanent magnets ( ) are rotable about corresponding secondary axes ( ) which extend parallel to each other and parallel to the main central axis ( ). The permanent magnets ( ) are magnetised with their respective direction of magnetisation extending transversely of their secondary axes ( ) and are independently rotatable by corresponding stepper motors ( ) in respective of annuli ( ) of the ring members ( ) for orienting the permanent magnets ( ) about their respective secondary axes ( ) for in turn altering the composite magnetic field generated in the central area ( ).

Device for generating a variable magnetic field

Growing community of inventors

Dublin, Ireland

John Michael David Coey