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arXiv · 1211.0916

Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers

Stephan Geprägs·Sibylle Meyer·Stephan Altmannshofer·Matthias Opel·Fabrice Wilhelm·Andrei Rogalev·Rudolf Gross·Sebastian T. B. Goennenwein
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Abstract

Using X-ray magnetic circular dichroism (XMCD) measurements, we explore the possible existence of induced magnetic moments in thin Pt films deposited onto the ferrimagnetic insulator yttrium iron garnet (Y3Fe5O12). Such a magnetic proximity effect is well established for Pt/ferromagnetic metal heterostructures. Indeed, we observe a clear XMCD signal at the Pt L3 edge in Pt/Fe bilayers, while no such signal can be discerned in XMCD traces of Pt/Y3Fe5O12 bilayers. Integrating the XMCD signals allows to estimate an upper limit for the induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers.

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Stephan Geprägs, Sibylle Meyer, Stephan Altmannshofer, Matthias Opel, Fabrice Wilhelm, Andrei Rogalev, Rudolf Gross, Sebastian T. B. Goennenwein. 2012-11-05. Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers. https://doi.org/10.1063/1.4773509

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