Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field

Details Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field

2011-05-25

arxiv.org/abs/1105.5088v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

We demonstrate magnetic switching between two $360^\circ$ domain wall vortex states in cobalt nanorings, which are candidate magnetic states for robust and low power MRAM devices. These $360^\circ$ domain wall (DW) or "twisted onion" states can have clockwise or counterclockwise circulation, the two states for data storage. Reliable switching between the states is necessary for any realistic device. We accomplish this switching by applying a circular Oersted field created by passing current through a metal atomic force microscope tip placed at the center of the ring. After initializing in an onion state, we rotate the DWs to one side of the ring by passing a current through the center, and can switch between the two twisted states by reversing the current, causing the DWs to split and meet again on the opposite side of the ring. A larger current will annihilate the DWs and create a perfect vortex state in the rings.

Affiliated with

Also associated with

No associations

Rating

Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching of +/-360deg domain wall states in a nanoring by an azimuthal Oersted field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-191853