Magnetic shift register as counter and data storage device

Static information storage and retrieval – Magnetic shift registers

Reexamination Certificate

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C365S158000

Reexamination Certificate

active

07876595

ABSTRACT:
A register having a track with a first electrode is at the first end to supply a current to the track in a first direction and a second electrode at the second end to supply a current to the track in a second direction, the second direction being opposite to the first direction. A first domain wall anchor and a second domain wall anchor are positioned proximate the track between the first electrode and the second electrode. Each of the domain wall anchors has a ferromagnetic pinned layer and a barrier layer proximate the track, with the barrier layer between the track and the ferromagnetic pinned layer. The ferromagnetic layer has a magnetization orientation pinned perpendicular to the magnetization orientation of the track.

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H. Numata et al., Scalable Cell Technology Utilizing Domain Wall Motion for High-Speed MRAM, 2007 Symposium on VLSI Technology Digest of Technical Papers, pp. 232-233 (2007).
U.S. Appl. No. 12/144,705, filed Jun. 24, 2008, Inventors: Xi et al.

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