TITLE

Broadband ferromagnetic resonance linewidth measurement of magnetic tunnel junction multilayers

AUTHOR(S)
Sierra, J. F.; Aliev, F. G.; Heindl, R.; Russek, S. E.; Rippard, W. H.
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/5/2009, Vol. 94 Issue 1, p012506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The broadband ferromagnetic resonance (FMR) linewidth of the free layer of magnetic tunnel junctions is used as a simple diagnostic of the quality of the magnetic structure. The FMR linewidth increases near the field regions of free layer reversal and pinned layer reversal, and this increase correlates with an increase in magnetic hysteresis in unpatterned films, low-frequency noise in patterned devices, and previous observations of magnetic domain ripple by use of Lorentz microscopy. Postannealing changes the free layer FMR linewidth, indicating that considerable magnetic disorder, originating in the exchange-biased pinned layer, is transferred to the free layer.
ACCESSION #
36178217

 

Related Articles

  • Manipulation of magnetic properties and domain wall dynamics in amorphous ferromagnetic microwires by annealing under applied stress. Chichay, K.; Rodionova, V.; Zhukova, V.; Ipatov, M.; Zhukov, A. // Solid State Phenomena;2014, Vol. 215, p432 

    The effect of annealing under applied stress on magnetic properties of Co-based or CoFeNi-based glass-coated microwires was studied. It was found that CoFeNi-based microwires became bistable after annealing because of changing of magnetostriction constant sign, while Cobased microwires keep...

  • Addition and subtraction of spin pumping voltages in magnetic hybrid structures. Azevedo, A.; Alves Santos, O.; Cunha, R. O.; Rodríguez-Suárez, R.; Rezende, S. M. // Applied Physics Letters;4/14/2014, Vol. 104 Issue 15, p152408-1 

    We report an investigation of the spin pumping voltage generated in bilayers of ferromagnetic/normal metal in which the ferromagnetic layer is yttrium iron garnet or Permalloy and the normal-metal layer is Pt or Ta. We also investigated a special case in which the voltage is detected in single...

  • Angle sensing with ferromagnetic nanowire arrays. Tannous, C.; Gieraltowski, J. // Applied Physics Letters;1/20/2014, Vol. 104 Issue 3, p032403-1 

    Hysteresis loops and Ferromagnetic Resonance (FMR) linewidths of Nickel ferromagnetic nanowire arrays are measured versus angle Ï‘H between the applied magnetic field angle and the common nanowire axis. Using Preisach analysis, we extract from the hysteresis loop an interaction parameter...

  • Enhanced ferromagnetism in H2O2-treated p-(Zn0.93Mn0.07)O layer. Sejoon Lee; Yoon Shon; Deuk Young Kim; Tae Won Kang; Yoon, Chong S. // Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p042115 

    Enhanced ferromagnetism was observed from the H2O2-treated p-type (Zn0.93Mn0.07)O:As layer. Compared with the untreated sample, the H2O2-treated sample showed the enlarged ferromagnetic hysteresis loop with approximately two-times-increased spontaneous magnetization. And also, in comparison with...

  • Ferromagnetic Gd-implanted ZnO single crystals. Potzger, K.; Zhou, Shengqiang; Eichhorn, F.; Helm, M.; Skorupa, W.; Mücklich, A.; Fassbender, J.; Herrmannsdörfer, T.; Bianchi, A. // Journal of Applied Physics;3/15/2006, Vol. 99 Issue 6, p063906 

    In order to introduce ferromagnetic properties, ZnO single crystals have been implanted with Gd ions at 180 keV ion energy and two different fluences. Magnetization reversal hysteresis loops have been recorded for as-implanted as well as annealed samples using a superconducting quantum...

  • Detection of magnetite particles in coal by ferromagnetic resonance. Malhotra, V. M.; Graham, W. R. M. // Journal of Applied Physics;2/15/1985, Vol. 57 Issue 4, p1270 

    Focuses on the use of ferromagnetic resonance (FMR) for the detection of magnetite particles in coal. Details on the experiment; Result and discussion; Usefulness of FMR technique in the identification and physical and chemical characterization of ferro- and ferrimagnetic minerals in coals.

  • Dynamics of magnetic field penetration into soft ferromagnets. Ducharne, B.; Sebald, G.; Guyomar, D.; Litak, G. // Journal of Applied Physics;6/28/2015, Vol. 117 Issue 24, p243907-1 

    We propose an approach to solve the coupled problem of the magnetic field penetration into soft ferromagnets and a frequency dependent magnetic hysteresis. The magnetic field diffusion is related to the macroscopic eddy currents. The hysteresis model is related to the microscopic eddy currents...

  • Interface roughness effects in the giant magnetoresistance in magnetic multilayers. Barnas, J.; Palasantzas, G. // Journal of Applied Physics;10/15/1997, Vol. 82 Issue 8, p3950 

    Analyzes in-plane electronic transport in thin layered magnetic structures composed of two ferromagnetic films separated by a nonmagnetic spacer. Role of interface roughness in the giant magnetoresistance; Application of self-affine interfaces described by the k-correlation model.

  • Investigation of interlayer coupling in [Fe/Cr][sub n] magnetic multilayer structures by the ferromagnetic resonance method (Review). Kreines, N. M. // Low Temperature Physics;Aug/Sep2002, Vol. 28 Issue 8/9, p581 

    The properties and nature of the interlayer coupling and the possible types of magnetic ordering in magnetic superlattices and sandwiches remain topical questions in the physics of magnetic phenomena. The existing models describing the interaction between ferromagnetic layers via the...

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