Engineering double-shifted hysteresis loops in Co/IrMn/Cu/Co films

Cichelero, R.; Pereira, L. G.; Dias, T.; Schmidt, J. E.; Deranlot, C.; Petroff, F.; Geshev, J.
September 2009
Applied Physics Letters;9/14/2009, Vol. 95 Issue 11, p112501
Academic Journal
Co(3 nm)/IrMn(15 nm)/Cu(dCu)/Co(7 nm) films were subjected to magnetic annealing where its temperature and duration as well as the direction and amplitude of the applied field were varied. We demonstrate that the exchange-bias field magnitude and sign of the subloop of the bottom-pinned Co layer can be tailored in a controlled manner allowing the whole hysteresis loop to be tuned from a double negatively/negatively shifted to a double negatively/positively shifted with the shifts of the subloops in antiphase.


Related Articles

  • Micromagnetic simulation of spin-transfer switching in a full-Heusler Co2FeAl0.5Si0.5 alloy spin-valve nanopillar. Huang, H. B.; Ma, X. Q.; Liu, Z. H.; Meng, F. Y.; Xiao, Z. H.; Wu, P. P.; Shi, S. Q.; Chen, L. Q. // Journal of Applied Physics;Aug2011, Vol. 110 Issue 3, p033913 

    We investigated the spin-transfer switching in a full-Heusler Co2FeAl0.5Si0.5 alloy spin-valve nanopillar through micromagnetic simulation. A two-step switching hysteresis loop due to the fourfold in-plane magnetocrystalline anisotropy of Co2FeAl0.5Si0.5 layers was obtained. The simulation...

  • Micromagnetic study of the intrinsic loop squareness S[sup *] in perpendicular media. Zhou, Hong // Journal of Applied Physics;5/15/2003, Vol. 93 Issue 10, p7843 

    Micromagnetic simulations have been performed to deshear the remanent hysteresis loops in perpendicular media. Results demonstrate that the intrinsic loop squareness S* increases with increasing the intergranular exchange couplings and with decreasing the intergranular magnetostatic...

  • Direct evidences of filamentary resistive switching in Pt/Nb-doped SrTiO3 junctions. Yang, M.; Ren, L. Z.; Wang, Y. J.; Yu, F. M.; Meng, M.; Zhou, W. Q.; Wu, S. X.; Li, S. W. // Journal of Applied Physics;2014, Vol. 115 Issue 13, p134505-1 

    The first concerned question on the fundamental physics of the resistive switching (RS) effect in metal/Nb-doped SrTiO3 junctions is whether the RS does take place at the whole interface or at some local regions of the interface. Even though several investigations provide the clues of the...

  • Effects of Exchange Interaction in Bilayer DyxCo1 — x/NiFe Films in the Vicinity of Compensation Compositions of Amorphous DyCo Alloys. Iskhakov, R. S.; Seredkin, V. A.; Stolyar, S. V.; Frolov, G. I.; Yakovchuk, V. Yu. // JETP Letters;11/10/2004, Vol. 80 Issue 9, p638 

    The displacement field of the hysteresis loop due to exchange anisotropy in planar DyCo/NiFe systems is studied experimentally as a function of the concentration of the rare-earth element. The bilayer DyCo/NiFe film system is characterized by an orthogonal arrangement of the effective...

  • Estimating the minimum pore size in globular systems with capillary hysteresis. Tovbin, Yu. K.; Petukhov, A. G. // Protection of Metals;May2008, Vol. 44 Issue 3, p236 

    A technique of estimating the minimum size of pores in regular globular structures, the isotherms of which may have a hysteresis loop that indicates the capillary condensation, is proposed. As a criterion of the minimum pore size, the contribution from the middle pore volume unaffected by the...

  • Magnetically superior and easy to handle L10-FePt nanocrystals. Yamamoto, Shinpei; Morimoto, Yasumasa; Ono, Teruo; Takano, Mikio // Applied Physics Letters;7/18/2005, Vol. 87 Issue 3, p032503 

    We report synthesis of monodisperse L10-FePt nanocrystals that are not only superior in magnetism but also easy to handle through being dispersible in solvents. Thanks to a thick SiO2 coating, the thermal treatment needed to form the L10 structure can be done even at 900 °C without inducing...

  • Alignment of Ba–O divacancies as a mechanism for polarization imprint in BaTiO3 as revealed by first principles and classical molecular dynamics simulations. Ying Ma; Bainian Liu; Yichun Zhou; Jianwen Ding // Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p122904 

    Periodic arrays of Ba–O divacancies in BaTiO3 were studied using both first principles calculations and molecular dynamics simulations. It is found that the 2nd-neighbor complexes that are aligned along the direction of the spontaneous polarization have the lowest formation energies. The...

  • Piezoelectric activity of thin PTZ films. Biryukov, S. V.; Golovko, Yu. I.; Masychev, S. I.; Mukhortov, V. M.; Shelepo, A. P. // Technical Physics;Aug2009, Vol. 54 Issue 8, p1176 

    The manifestations of the piezoelectric activity of thin ferroelectric PZT films produced by high-frequency cathode sputtering of targets of a stoichiometric composition are studied. The films are found to have natural unipolarity. Possible causes of this phenomenon are discussed. A family of...

  • Coercivity control in finite arrays of magnetic particles. Yang, Bo; Zhao, Yang // Journal of Applied Physics;Nov2011, Vol. 110 Issue 10, p103908 

    Micromagnetic simulation has been performed for two-dimensional arrays of single-domain magnetic particles using the Landau-Lifshitz equation of motion and an energy minimization method. Effects of array anisotropy and spin positional disorder on the hysteresis loop and coercivity of the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics