Abstract
Multilayer magnetic materials have been the subject of intense study for a number of years. The complexity of multilayer structures, which have been investigated, has reflected the move from fundamental studies to applications in practical devices. Perhaps one of the most basic investigations has been on binary (e.g. nxCo/Cu or nxFe/Cr) multilayers, where exchange coupling through the non- magnetic layer has been studied [1]. As this work extended it became clear that new magnetotransport phenomena (giant magnetoresistance [2] and spin-valves [3]) were present. This in turn led on to the possibility of new magnetic sensors, including read heads for the recording industry [4]. The move from the laboratory scale scientific samples to practical devices has led to a significant increase in the number of individual layers required to form a sample. Figure 1 is a schematic illustration of the embodiment of a spin-valve magnetic recording head.
Schematic spin-value head arrangement (courtesy Declan Macken, Seagate.
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Gibbs, M.R.J. (2001). Magnetostriction in Multilayer Systems. In: Gibbs, M.R.J. (eds) Modern Trends in Magnetostriction Study and Application. NATO Science Series, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0959-1_6
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DOI: https://doi.org/10.1007/978-94-010-0959-1_6
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