Quantitative analysis of magnetization reversal in submicron S-patterned structures with narrow constrictions by magnetic force microscopy

Chen, Y. C.; Yao, Y. D.; Lee, S. F.; Liou, Y.; Tsai, J. L.; Lin, Y. A.
January 2005
Applied Physics Letters;1/31/2005, Vol. 86 Issue 5, p053111
Academic Journal
We present a quantitative study of magnetization reversal and domain wall pinning phenomenon in an S-patterned ferromagnetic wire with narrow constrictions by magnetic force microscopy (MFM). The variation of domain structures with magnetic field is evidenced by electron transport measurements, simulation, and MFM images. The switching behaviors are strongly affected by narrow constrictions connecting the half-ring wires. The proposed MFM analysis effectively separate the local hysteresis loops at the arc section and the narrow constriction, which provide quantitative data, including relative magnetization intensity, local switching field, and domain wall depinning field for the multidomain wire. The MFM results correlate with other experimental data well, and provide direct evidence that the domain state at constriction dominates the magnetoresistance behavior.


Related Articles

  • Visualizing Vortex Dynamics in Py/Nb Thin Film Hybrids by Low Temperature Magnetic Force Microscopy. Cucolo, A.; Scarfato, A.; Iavarone, M.; Longobardi, M.; Bobba, F.; Karapetrov, G.; Novosad, V.; Yefremenko, V. // Journal of Superconductivity & Novel Magnetism;Oct2012, Vol. 25 Issue 7, p2167 

    We have analyzed the vortex dynamics in Py(1 μm)/SiO(10 nm)/Nb(360 nm) thin film heterostructures as resulted from Magnetic Force Microscopy (MFM) frequency shift maps at low temperatures. The Nb film thickness has been chosen larger than the superconducting London penetration depth of about...

  • Ballistic transport through a sharp domain wall in a semiconducting ferromagnetic nanoconstriction and in the presence of the Dresselhaus spin-orbit coupling. Ghanaatshoar, M.; Fallahi, V. // European Physical Journal B -- Condensed Matter;Apr2011, Vol. 80 Issue 3, p401 

    We study the effect of the Dresselhaus spin-orbit interaction on the magnetoresistance (MR) of a quasi-one-dimensional ferromagnetic semiconductor containing a sharp domain wall. The MR is calculated in the ballistic regime, within the Landauer-Büttiker formalism. The results show that the...

  • Signal-to-noise deterioration in perpendicular storage media by thermal and magnetic field aging as determined by magnetic force microscopy. Svedberg, Erik B.; Khizroev, Sakhrat; Chang, Chunghee H.; Litvinov, Dmitri // Journal of Applied Physics;12/1/2002, Vol. 92 Issue 11, p6714 

    The long-term stability of a CoCrPt perpendicular storage media has been investigated by thermal aging at temperatures ranging from 95 to 280 °C during otherwise normal ambient conditions. The signal-to-noise ratio from magnetic force microscopy images has been extracted by the...

  • Magnetization reversal study in submicron half-ring patterned wires with different corner structures. Yu, C.; Chen, Y. S.; Yao, Y. D.; Cheng, K. W.; Lee, S. F.; Wu, K. T.; Liou, Y. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08G309 

    Magnetization reversal phenomena in submicron half-ring patterned wires with different corner structures have been investigated. The wires with corner structures of rectangular, semicircle, and triangular shapes were connected in series by two or five half-rings. The variation of domain...

  • Anisotropic magnetoresistance effect in sub-micron nickel disks. Wren, T.; Kazakova, O. // Journal of Applied Physics;2015, Vol. 117 Issue 17, p17E134-1 

    The hysteretic transport properties of vortex states in sub-micron nickel disks are measured using the anisotropic magnetoresistance (AMR) effect and correlated with the magnetization state of the disks using in-situ magnetic force microscopy and micromagnetic modelling. The magnetoresistance...

  • Combination of magnetic force microscopy with in situ magnetoresistance measurements. Buntinx, D.; Volodin, A.; Haesendonck, C. Van // Journal of Applied Physics;7/15/2002, Vol. 92 Issue 2, p1014 

    We have combined magnetic force microscopy in the presence of an external magnetic field with in situ magnetoresistance measurements. This provides the unique opportunity of studying the interplay between the domain structure and the magnetoresistance of mesoscopic ferromagnetic thin film...

  • Micromagnetic simulation of ferromagnetic part-spherical particles. Boardman, Richard P.; Fangohr, Hans; Cox, Simon J.; Goncharov, Alexander V.; Zhukov, Alexander A.; de Groot, Peter A. J. // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p7037 

    The paramagnetic size limit for current magnetic storage media, particularly in sputtered grain storage, is being approached rapidly. To further increase media storage density, patterned media can be used which only need a single grain to store one bit of data. Chemical self-assembly techniques...

  • Mechanism of surface magnetization by friction of ferromagnetic materials. Mishina, H.; Hase, A.; Nakase, T.; Dohi, M. // Journal of Applied Physics;May2009, Vol. 105 Issue 9, p093911 

    Experiments showed that in the absence of an external magnetic field, the ferromagnetic materials Ni and Co undergo spontaneous magnetization of their frictional sliding surfaces as a result of tribological actions such as friction and wear. The magnetization phenomenon on the sliding surface...

  • Magnetic properties of laser-induced ferromagnetic cobalt quantum dots passivated by ultrathin Ta film. Jung Yup Yang; Kap Soo Yoon; Young Ho Do; Ja Hyun Koo; Chae Ok Kim; Jin Pyo Hong; Si Ok Son; Hyun Jung Kim // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p7548 

    The ferromagnetic quantum dots (FMQDs) are fabricated by exposing a pulsed Nd:YAG laser (wavelength=355 nm) on ultrathin cobalt (Co) films under an external magnetic field of 1000 Oe. Various dot diameters and densities of more than 3.5×1010/cm2 are ultimately realized by changing laser...


Read the Article


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

Try another library?
Sign out of this library

Other Topics