Patent ID: 7626856

Claim:
A magnetic recording element, comprising: a ferromagnetic body; a first electrode pair joined to the ferromagnetic body; and a second electrode pair joined (i) to a surface of the ferromagnetic body to which the first electrode pair is not joined, (ii) to part of the first electrode pair, or (iii) to both a surface of the ferromagnetic body to which the first electrode pair is not joined and to part of the first electrode pair; wherein the second electrode pair comprises a first electrode and a second electrode in which the first electrode and the second electrode are disposed such that a potential difference arises between them when a current is passed between members of the first electrode pair, wherein at least one of the first electrode and the second electrode is joined to the ferromagnetic body such that a gap is created between one of the first electrode pair in which a magnetic domain wall can be held, and wherein the ferromagnetic body has at least one magnetic domain wall induced therein.