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US 8,525,601 B2Granted
Oscillators using magnetic domain wall and methods of operating the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-chul Lee, Mathias Klaui, Sun-ae Seo, Young-jin Cho, Ung-hwan Pi, Ji-young Bae, Jin-seong Heo
Life of this patent
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Abstract
An oscillator generates a signal using precession of a magnetic moment of a magnetic domain wall. The oscillator includes a free layer having the magnetic domain wall and a fixed layer corresponding to the magnetic domain wall. A non-magnetic separation layer is interposed between the free layer and the fixed layer.
Claims23
An oscillator comprising:
- a free layer having at least two adjacent magnetic domains, and a magnetic domain wall between the at least two adjacent magnetic domains;
- a separation layer formed on the free layer;
- and
- a fixed layer formed on the separation layer to correspond to the magnetic domain wall;
- wherein
- a signal is generated by precession of a magnetic moment of the magnetic domain wall.
3 more elements
An oscillator comprising:
- a free layer having a magnetic domain wall between two adjacent magnetic domains, the free layer including a first region and a second region at each side of the first region, the second region having a larger width than a width of the first region, and the magnetic domain wall being disposed in the first region;
- a separation layer formed on the free layer;
- and
- a fixed layer formed on the separation layer to correspond to the magnetic domain wall;
- wherein
- a signal is generated by precession of a magnetic moment of the magnetic domain wall.
3 more elements
An oscillator comprising:
- a free layer having a magnetic domain wall between two adjacent magnetic domains;
- a separation layer formed on the free layer;
- and
- a fixed layer formed on the separation layer to correspond to the magnetic domain wall;
- wherein
- a signal is generated by precession of a magnetic moment of the magnetic domain wall, and
- the free layer has the form of a track in which a plurality of first regions having a first width and a plurality of second regions having a second width are alternately repeated, the first width being larger than the second width, and wherein a magnetic domain wall is included in each of the plurality of second regions.
4 more elements
Dependencies are inferred from the claim text.