Abstract
Exchange bias and spin valve structures with Fe as ferromagnetic layers selectively enriched in 57Fe and Ir–Mn of different compositions as antiferromagnetic pinning layers have been prepared by r.f. sputtering. Conversion Electron Mössbauer Spectroscopy and Magneto Optic Kerr Effect have shown that the local structure and interactions in the whole ferromagnetic layers, with direct influence on their magnetic reversal processes, depend on growing order of the layers and composition of the AF layer. Interfacial atomic diffusion is the main reason of perturbing the local structure of the ferromagnet. Mössbauer Spectroscopy is a powerfool tool which allows a detailed analysis of local configurations, in order to optimize the magnetic and giant magnetoresistive parameters of such multilayers of important technological applications.
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Meiklejohn, W.H., Bean, C.P.: New magnetic anisotropy. Phys. Rev. 102, 1413 (1956)
Nogues, J., Schuller, I.K.: Exchange bias. J. Magn. Magn. Mater. 192, 203–219 (1999)
Kiwi, M.: Exchange bias theory. J. Magn. Magn. Mater. 234, 584–595 (2001)
Dieny, B., Speriosu, V.S., Parkin, S.S.P., Gurney, B.A., Wilhoit, D.K., Mauri, D.: Giant magnetoresitance in soft ferromagnetic multilayers. Phys. Rev. B 43, 1297–1300 (1991)
Kools, J.C.S.: Exchange-biased spin-valves for magnetic storage. IEEE Trans. Magn. 32, 3165 (1996)
Parkin, S.: Spin polarized current in spin valves and magnetic tunnel junctions. MRS Bull. 31, 389–394 (2006)
Radu, F., Zabel, H.: Exchange bias effect of ferro-/antiferromagnetic heterostructures. In: Bader, S.D., Zabel, H. (eds.) Magnetic heterostructures, pp. 97–184. Springer, Berlin (2007)
Dieny, B.: Spin valves. In: Johnson, M. (ed.) Magnetoelectronics, pp. 67–377. Elsevier Inc. (2004)
McFadyen, I.R., Fullerton, E.E., Carey, M.J.: State-of-the-art magnetic hard disk drives. MRS Bull. 31, 379–383 (2006)
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Kuncser, V., Schinteie, G., Palade, P. et al. Spin configurations and interfacial diffusion in exchange bias and spin valve systems with Ir–Mn antiferromagnetic pinning layers. Hyperfine Interact 191, 135–141 (2009). https://doi.org/10.1007/s10751-009-9984-x
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DOI: https://doi.org/10.1007/s10751-009-9984-x