Controlling the stability of both the structure and velocity of domain walls in magnetic nanowires

Abstract

Citation for published item:fr nd£ oD tF nd etkinsonD hF @PHITA 9gontrolling the st ility of oth the stru ture nd velo ity of dom in w lls in m gneti n nowiresF9D epplied physi s lettersFD IHW @TAF HTPRHSF Further information on publisher's website: PHIT emeri n snstitute of hysi sF his rti le m y e downlo ded for person l use onlyF eny other use requires prior permission of the uthor nd the emeri n snstitute of hysi sF he following rti le ppe red in fr nd£ oD tF etkinsonD hF @PHITAF gontrolling the st ility of oth the stru ture nd velo ity of dom in w lls in m gneti n nowiresF epplied hysi s vetters IHW@TAX HTPRHS nd m y e found t httpsXGGdoiForgGIHFIHTQGIFRWTHPHI Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires

“…Various wire geometries were studied to obtain a generalised understanding of the influence of the Pt layer. Parallel-sided and fixed-angle periodic triangular featured nanowires were fabricated to provide modulation that is known to influence the DW propagation 25 . The parallel-sided nanowire has a width of 250 nm.…”

“…However, although the mechanisms occurring at the NM/FM interface have been explored in magnetic wires with strong IDMI and perpendicular anisotropy, few studies have addressed the influence of the heavy metal layer on in-plane magnetization processes and in nanowires 21 , 22 . Furthermore, whilst it is known from experimental and micromagnetic studies of in-plane magnetic nanowires that the field driven DW propagation behaviour is controlled by precessional processes that leads to Walker breakdown 23 , and which in turn can be controlled by periodic structuring of the nanowires 24 , 25 , the influence of additional interfacial damping and IDMI on the domain wall behaviour has not been studied in detail. Understanding the influences of both enhanced damping and IDMI on the DW dynamic behaviour relates to a fundamental physical understanding and is relevant to technological applications.…”

Nonuniform magnetic domain-wall synapses enabled by population coding

“…structural defects and inhomogeneous alloy components introduced in the fabrication [29,30]. Edge modulation and notches can improve the deterministic control [31][32][33]. Nevertheless, the randomness still exists and the resulting local barriers of notches are not ideally identical.…”

Edge defects inducing asymmetric transverse domain walls created in Ni80Fe20 nanowires

“…Based on the obtained data, we can work out the role of edge defects in the long edges of those studied NWs by adding the obtained data into the wall phase diagram. In fact, many researchers showed that edge behaviors strongly induce the degree of asymmetry in a TDW/VDW [17][18][19]. Understanding this factor leads us to work out a quantitative change if a TDW is created in a straight or curved NW.…”