TITLE

Direct observation and control of the Walker breakdown process during a field driven domain wall motion

AUTHOR(S)
Glathe, S.; Mattheis, R.; Berkov, D. V.
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p072508
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the real-time study of a domain wall motion in giant magnetoresistance nanostrips. We have visualized the Walker breakdown process (WBP) [N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974)] in single shot experiments. The domain wall motion above the Walker breakdown is highly nonperiodic. Surprisingly, the time intervals of movement are equal or larger than those where the domain wall nearly stops. When an additional transversal magnetic field is applied, domain wall motion becomes more regular, enabling the study of the WBP in more detail. A sufficiently large transverse field can suppress the WBP completely.
ACCESSION #
34135628

 

Related Articles

  • Voltage and temperature dependence of high-field magnetoresistance in arrays of magnetic nanoparticles. Tan, Reasmey P.; Carrey, Julian; Respaud, Marc // Journal of Applied Physics;Jul2008, Vol. 104 Issue 2, p023908 

    Huge values of high-field magnetoresistance have been recently reported in large arrays of ferromagnetic CoFe nanoparticles embedded in an organic insulating matrix in the Coulomb blockade regime. The magnetoresistance displays two characteristic behaviors: a scaling with the magnetic...

  • Angular dependence of spin-transfer switching in a magnetic nanostructure. Mancoff, F.B.; Dave, R.W.; Rizzo, N.D.; Eschrich, T.C.; Engel, B.N.; Tehrani, S. // Applied Physics Letters;8/25/2003, Vol. 83 Issue 8, p1596 

    We measured switching of a thin film nanomagnet driven by spin-polarized current in giant magnetoresistance spin valves as small as 50 nm×100 nm. Spin-transfer reversal is observed in both dc current and magnetic field sweeps, with a switching current of ∼5 mA, for example, for a bit...

  • Low frequency magnetization excitations in magnetic nanopillars induced by a dc spin-polarized current. Theodoropoulou, N.; Sharma, A.; Pratt, W. P.; Bass, J. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07D122 

    We present observations of low frequency, (fundamentals ≤1 GHz) current-driven magnetization dynamics at 293 K in partially patterned Py (24 nm)/Cu(10)/Py(6), elliptical, nanopillars, with the top Py(6) magnetic layer and part of the Cu layer shaped into an ∼70×140 nm2 nanopillar...

  • Adjusting magnetic nanostructures for high-performance magnetic sensors. Xiaolu Yin; Ralph Skomski; David Sellmyer; Sy-Hwang Liou; Russek, Stephen E.; Evarts, Eric R.; Moreland, John; Edelstein, A. S.; Yuan, L.; Yan, M. L.; Shen, J. // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17E528-1 

    The magnetic properties of the soft ferromagnetic layer in magnetic tunnel junctions are one of key factors to determine the performance of magnetoresistance sensors. We use a three-step orthogonal annealing procedure to modify the nanostructures of the free layer in the magnetic tunnel junction...

  • Planar Hall effect and anisotropic magnetoresistance in layered structures Co0.45Fe0.45Zr0.1/ a-Si with percolation conduction. Aronzon, B. A.; Granovskiĭ, A. B.; Davydov, A. B.; Dokukin, M. E.; Kalinin, Yu. E.; Nikolaev, S. N.; Rylkov, V. V.; Sitnikov, A. V.; Tugushev, V. V. // Journal of Experimental & Theoretical Physics;Jul2006, Vol. 103 Issue 1, p110 

    Magnetic and magnetotransport properties of multilayered nanostructures Co0.45Fe0.45Zr0.1/ a-Si obtained by ion-beam sputtering are investigated. The temperature dependence of the resistance obeys a law of the form R xx ∝-log T, which is typical of metal-insulator nanocomposites on the...

  • The electromotive force of MnAs nanoparticles. Ralph, D. C. // Nature;6/9/2011, Vol. 474 Issue 7350, pE6 

    Arising from P. N. Hai, S. Ohya, M. Tanaka, S. E. Barnes &S. Maekawa. 458, 489-492 (2009)Magnetic tunnel junctions can produce large magnetoresistance effects that are of use in a variety of applications. Hai et al. recently published a very interesting paper in which the application of a large...

  • Size effect of strong-coupled superconducting In2Bi nanoparticles: An investigation of short-range electron phonon coupling. Po-Yu Lin; Gandhi, Ashish Chhaganlal; Sheng Yun Wu // Journal of Applied Physics;2015, Vol. 117 Issue 17, p17E316-1 

    We report the influence of the nanosized effect on the superconducting properties of bimetallic In2Bi nanoparticles. In this study, the temperature- and applied magnetic field-dependence of the magnetization were utilized to investigate the electron-phonon coupling effect while controlling...

  • Controllable switching of vortex chirality in magnetic nanodisks by a field pulse. Gaididei, Yuri; Sheka, Denis D.; Mertens, Franz G. // Applied Physics Letters;1/7/2008, Vol. 92 Issue 1, p012503 

    We propose a way of fast switching the chirality in a magnetic nanodisk by applying a field pulse. To break the symmetry with respect to clockwise or counterclockwise chirality, a mask is added by which an inhomogeneous field influences the vortex state of a nanodisk. Using numerical...

  • The Effect Of Temperature On Magnetic Behavior Of Magnetite Nanoparticles And Its Nanocomposites. Kong, I.; Ahmad, S. H.; Abdullah, M. H.; Yusoff, A. N. // AIP Conference Proceedings;6/1/2009, Vol. 1136 Issue 1, p830 

    The magnetic properties of magnetite nanoparticles and magnetite-thermoplastic natural rubber (TPNR) nanocomposites was prepared by melt-blending method has been studied using vibrating sample magnetometer (VSM). The saturation magnetization (MS), remanence (MR), squareness (MR/MS), coercivity...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics