TITLE

Domain-wall depinning by controlling its configuration at notch

AUTHOR(S)
Sheng-Huang Huang; Chih-Huang Lai
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/20/2009, Vol. 95 Issue 3, p032505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We study current-induced magnetic domain wall (DW) motion in nanostripes with reduced dimensions in which transverse-type DWs are stable. Micromagnetic simulation reveals that the depinning probability of the DW strongly depends on the DW configuration when the DW approaches the notch. The spin torque energy does not only drive DW motion but contribute to the transformation of DW configurations between transverse- and antivortex-type when the current density is above a threshold value. When the DW changes from the transverse to antivortex state, it stores potential energy which helps it to depin from the notch.
ACCESSION #
43398048

 

Related Articles

  • Reduction of switching current density in perpendicular magnetic tunnel junctions by tuning the anisotropy of the CoFeB free layer. Rahman, M. T.; Lyle, A.; Khalili Amiri, P.; Harms, J.; Glass, B.; Zhao, H.; Rowlands, G.; Katine, J. A.; Langer, J.; Krivorotov, I. N.; Wang, K. L.; Wang, J. P. // Journal of Applied Physics;Apr2012, Vol. 111 Issue 7, p07C907 

    The spin torque switching behavior of perpendicular magnetic tunnel junctions consisting of a CoFeB free layer and a CoFeB/Ru/(Co/Pd)n exchanged coupled fixed layer is investigated. At first, the Ru and CoFeB layer thickness is tuned in the CoFeB/Ru/(Co/Pd)n structure to form a ferromagnetically...

  • Rigid body rotation evolution due to a disturbing torque which is known in a body frame. Pivovarov, M.L.; Ferreira, L.O.; Lopes, R.V.F. // Acta Mechanica;1999, Vol. 133 Issue 1-4, p239 

    Addresses the problem of rigid body rotation evolution under the action of a torque which depends on the projections of rigid body angular velocity onto the body frame only. Equations of the problem; Rotating spacecraft jet damping; Solution to the problem of maintaining the angular velocity of...

  • Coulomb motor by rotation of spherical conductors via the electrostatic force. Wistrom, Anders O.; Khachatourian, Armik V. M. // Applied Physics Letters;4/15/2002, Vol. 80 Issue 15, p2800 

    Three spherical conductors fixed in space and held at constant potential produces a rotational force that causes the conductors to rotate about their axis. The motor is described by an expression for the moment of force given by Coulomb’s law complemented by Gauss’ law of the...

  • Rotational dynamics of passive high Tc superconducting bearings. Weeks, David E. // Journal of Applied Physics;8/1/1991, Vol. 70 Issue 3, p1820 

    Presents information on a study which discussed the rotational dynamics of passive high T[subc] superconducting bearings. Quantities which are of interest in bearing design; Experimental results; Analysis of the decelerating torques on the bearing.

  • Direct evidence for a half-metallic ferromagnet. Park, J.-H.; Vescovo, E.; Kim, H.-J.; Kwon, C.; Ramesh, R.; Venkatesan, T. // Nature;4/23/1998, Vol. 392 Issue 6678, p794 

    Presents research which reported spin-resolved photoemission measurements of the half-metallic material, a ferro-magnetic manganese perovskite. Traits of half-metallic materials; Electronic density of states; Conductivity; Manifestations of half-metallic nature; Aspects of minority and majority...

  • Talk of torgue consistency. Curreen, Phillip // DEMM: Engineering & Manufacturing;Jul2009, p25 

    The article offers tips on how to achieve consistency for torque control tightening. Use of torque wrench is said to be the most common method, however, it does not achieve consistency when it comes to bolt tightening, according to the author. A table that lists factors by which torque...

  • INFINITELY VARIABLE TRANSMISSION USING FOUR BAR MECHANISM. ARUNKUMAR, N.; SANTHOSH, R.; SUBRAMANIAM, S. SUNIL // International Journal of Engineering Science & Technology;Apr2014, Vol. 6 Issue 4, p170 

    Most of the continuously variable transmission systems in automobiles now-a-days are non-positive drives. This means that they cannot be used in heavy vehicles that require very high torque to be transmitted. This new type of infinitely variable transmission is aimed at transmitting high torques...

  • Time-domain analysis of spin-torque induced switching paths in nanoscale CoFeB/MgO/CoFeB magnetic tunnel junction devices. Heindl, R.; Rippard, W. H.; Russek, S. E.; Pufall, M. R. // Journal of Applied Physics;12/28/2014, Vol. 116 Issue 24, p243902-1 

    We performed thousands of single-shot, real-time measurements of spin-transfer-torque induced switching in nanoscale CoFeB/MgO/CoFeB magnetic tunnel junctions having in-plane magnetizations. Our investigation discovered a variety of switching paths occurring in consecutive, nominally identical...

  • Another fine mesh. Venables, Mark // Engineer (00137758);1/16/2006, Vol. 293 Issue 7691, p41 

    The article focuses on the use of planetary gearhead system to increase torque capacity of machines. Gearheads are capable of improving the dynamic response of a servo system. Gearhead manufacturers are focusing on ways to utilize gearhead system to reduce backlash, which can be accounted for a...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics