Ferromagnetic thin wire element
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United States of America Patent
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Jan 1, 2013
Grant Date -
Mar 24, 2011
app pub date -
Apr 21, 2008
filing date -
Apr 21, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention uses a ferromagnetic thin wire having a domain wall inside, with the magnetic moment at the center thereof being perpendicular to the longitudinal axis of the thin wire. With the domain wall being fixed by a domain wall fixation device (e.g. antiferromagnetic thin wires) so that the domain wall is prevented from moving in the ferromagnetic thin wire, when a direct current is supplied, the magnetic moment rotates in the immobilized domain wall. This rotation of the moment can be detected by a TMR element or the like. This configuration of the ferromagnetic thin wire element can be directly used to create a microwave oscillator or magnetic memory.
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