University of Birmingham > Talks@bham > Condensed Matter Physics Seminars > Magnetism at an Interface: - proximity effects in metallic multilayers

Magnetism at an Interface: - proximity effects in metallic multilayers

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  • UserDr. Thomas Hase, Warwick University
  • ClockFriday 07 December 2012, 14:00-15:00
  • HousePhysics East 217.

If you have a question about this talk, please contact Elizabeth Blackburn.

Giant magnetic proximity effects can be observed in at least two distinct regimes: In ferromagnetic materials above their inherent critical ordering temperature and in materials which have a high paramagnetic susceptibility and are almost a ferromagnet when considered from the point of view of their electronic structure. Current growth techniques allow magnetic multilayers to be tailored and controlled with unprecedented precision allowing the study of fundamental magnetism on a range of length scales not previously accessible. In this seminar, I will describe how a giant magnetic proximity effect can be induced in the near interface regions of epitaxial Pd/Fe/Pd multilayers, where the Fe acts as a local magnetic source, and how this affects both the spatial extent of the magnetisation and its ordering phenomenon. I will describe the use of resonant magnetic x-ray scattering as a probe of the element specific magnetic superstructure as a function of temperature for Fe layers in the 0.2 to 1.2 monolayer thickness range. The element specific data, which enables us to separate the source and induced moments, is compared with bulk magnetometry determined using the magneto-optical Kerr effect (MOKE) from continuous and nanoscaled patterned material.

This talk is part of the Condensed Matter Physics Seminars series.

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