Domain Wall Propagation Nanowire

Zabel ainstitut für experimentalphysik ruhr universität bochum d 44780 bochum germany d.

Domain wall propagation nanowire. Until now this propagation has been induced by an. Domain walls can be created using continuous fields and those created walls are propagated under field pulses of 100 ns. We have investigated the propagation of transverse domain walls in magnetic nanowires under axial and transverse magnetic fields using three dimensional micromagnetic modeling. Domain wall propagation and has a maximum observed value of hp 3 0 oe.

Constant field domain wall propagation in the nanowire was studied using fast risetime field steps. Characteristics of wall propagation were studied and results of which indicate that using a bundle of field pulses a domain wall can be propagated from the first nanowire to the second one. Vortex domain wall propagation in periodically modulated diameter fecocu nanowire as determined by the magneto optical kerr effect ester m palmero cristina bran rafael p del real and manuel vázquez institute of materials science of madrid csic 28049 madrid spain e mail. 2b suggests that this force increases linearly with the current however one should be careful as the temperature of the nanowire was also current dependent.

Performed by domain wall propagation through ferromagnetic nanowire junctions resulting in magnetization reversal. Transverse magnetic fields change the domain wall width and below the walker field either increase or decrease the domain wall velocity depending when the field and wall magnetization are parallel or antiparallel. We demonstrate movement of a head to head domain wall through a magnetic nanowire of permalloy ni 81 fe 19 simply by passing an electrical current through the domain wall and without any external magnetic field applied the effect depends on the sense and magnitude of the electrical current and allows direct propagation of domain walls through complex nanowire shapes contrary to the case of. It presents an axial elongation as a screw which rotates during the domain wall propagation while the vortex core is following a spiral path.

Epalmero icmm csic es received 2 september 2015 revised 24 september. 1 domain wall propagation in permalloy nanowires with a thickness gradient o. Measurements consisted of incrementing alternately the position of the probe laser spot along the nanowire and measuring the time resolved moke at that position. Instead of exhibiting a vortex domain wall as in wide homogenous single nanowire micromagnetic simulations yield a more complex domain wall structure for the dmnw wide segment see fig.

Domain wall propagation in magnetic nanowires by spin polarized current injection.