TITLE

Anomalous training effect of perpendicular exchange bias in Pt/Co/Pt/IrMn multilayers

AUTHOR(S)
Shi, Z.; Qiu, X. P.; Zhou, S. M.; Bai, X. J.; Du, J.
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/1/2008, Vol. 93 Issue 22, p222504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
For perpendicularly magnetized Pt/Co/Pt and Pt/Co/Pt/IrMn multilayers, the magnetization reversal process is accompanied by the pinned domain wall motion. For Pt/Co/Pt/IrMn multilayers, the asymmetry of hysteresis loops is always equal to zero and the exchange field HE decreases during consecutive hysteresis loops. It is interesting to find that the variation in HE with the cycle number n cannot be fitted by the empirical 1/n function. Meanwhile, the coercivity almost does not change. The unique feature of the training effect is caused by the magnetization reversal mechanism of the pinned domain wall motion in the Pt/Co/Pt multilayers.
ACCESSION #
35763842

 

Related Articles

  • Nucleation of vortex pairs in exchange biased nanoelements. Silva, A. S. M.; Dantas, Ana L.; Rebouças, G. O. G.; Carriço, A. S. // Journal of Applied Physics;Apr2011, Vol. 109 Issue 7, p07D314 

    We report a theoretical investigation of interface effects in the magnetic order of interface biased iron and Permalloyâ„¢ elliptical nano-elements. Contrary to intuition, there is a partial pinning of the interface layer, favoring double vortex states along the hysteresis loop. Interface...

  • Enhanced exchange bias effects in a nanopatterned system consisting of two perpendicularly coupled ferromagnets. Bollero, A.; Dieny, B.; Sort, J.; Buchanan, K. S.; Landis, S.; Nogués, J. // Applied Physics Letters;1/14/2008, Vol. 92 Issue 2, p022508 

    The effect of patterning on the shift of the hysteresis loop HE and coercivity HC in a system composed of two perpendicularly exchange-coupled ferromagnets (NiFe sputtered onto a [Pt/Co] multilayer) is investigated in long stripes and square dots. Setting the exchange bias coupling along the...

  • Real-time study of domain dynamics in ferroelectric Sr0.61Ba0.39Nb2O6. Tian, L.; Scrymgeour, David A.; Gopalan, Venkatraman // Journal of Applied Physics;6/1/2005, Vol. 97 Issue 11, p114111 

    Systematic studies of ferroelectric domain reversal of strontium barium niobate (Sr0.61Ba0.4Nb2O6 or SBN:61) single crystals by electric-field poling using liquid electrodes are reported. In contrast with previous studies using metal electrodes, it is shown that repeated domain reversal does not...

  • Domain structure during magnetization reversal of PtMn/CoFe exchange bias micropatterned lines. Liedke, Maciej Oskar; Potzger, Kay; Bothmer, Anne H.; Fassbender, Juergen; Hillebrands, Burkard; Rickart, Marc; Freitas, Paulo P. // Journal of Applied Physics;8/15/2006, Vol. 100 Issue 4, p043918 

    The magnetic domain configuration and the magnetization reversal behavior of micropatterned exchange bias elements were investigated by means of magnetic force microscopy. In addition to the unidirectional anisotropy the shape anisotropy determines the overall magnetization reversal behavior. In...

  • Domain structures and switching properties in ferroelectric nanocomposites. Artemev, A. // Applied Physics Letters;9/23/2013, Vol. 103 Issue 13, p132912 

    The phase field method was used to study the domain structure and switching in nanocomposites consisting of ferroelectric nanorods and a dielectric matrix. The results demonstrate that the domain structure and hysteresis loop shape are controlled by the nanocomposite structure and by the misfit...

  • Modeling the effects of nanosized precipitates on magnetic hysteresis and Barkhausen effect signal. Lo, C. C. H. // Journal of Applied Physics;Apr2012, Vol. 111 Issue 7, p07D109 

    A model has been developed for describing the effects of randomly distributed precipitates on magnetic hysteresis and Barkhausen emissions based on a hysteretic-stochastic process model of domain wall dynamics. The pinning of magnetic domain walls by spherical precipitates is described in terms...

  • Effect of magnetostatic energy on domain structure and magnetization reversal in (Co/Pd) multilayers. Sbiaa, R.; Bilin, Z.; Ranjbar, M.; Tan, H. K.; Wong, S. J.; Piramanayagam, S. N.; Chong, T. C. // Journal of Applied Physics;Jun2010, Vol. 107 Issue 10, p103901 

    Magnetization reversal in (Co/Pd) multilayers with perpendicular anisotropy for different numbers of bilayers (N) is investigated experimentally and by theoretical modeling. The focus of this study is on the magnetostatic energy in these structures and its effect on the magnetization reversal...

  • Size effects on the magnetization reversal behavior of exchange bias modulated thin films. Hamann, Christine; Mönch, Ingolf; Kaltofen, Rainer; Schäfer, Rudolf; Gemming, Thomas; Schultz, Ludwig; McCord, Jeffrey // Journal of Applied Physics;Jul2008, Vol. 104 Issue 1, p013926 

    Thin films of NiFe/IrMn/Ta with spatially modulated unidirectional anisotropy have been prepared by local oxidation of the antiferromagnetic IrMn layer. Varying the lateral dimensions and orientation of the stripe structures with respect to the direction of exchange bias, the films exhibited...

  • Magnetic domain structure along hysteresis loop of perpendicularly magnetized Co layers. Belhi, R.; Fassatoui, A.; Adanlété Adjanoh, A.; Abdelmoula, K. // Journal of Applied Physics;2014, Vol. 116 Issue 1, p013908-1 

    We present an experimental study of the magnetization reversal in Au/Co layers with perpendicular anisotropy versus variable magnetic field. Changes in domain structure were recorded simultaneously with the measurement of the hysteresis loop by a Kerr microscope in polar configuration. The...

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