Modification of Exchange Coupling in Fe/Nb/Fe/Pd Layered Structures using Hydrogen |
| M. Wachowiaka, A. Marczyńskaa, H. Dawczak-Dębickia,b, M. Pugaczowa-Michalskaa, S. Pacanowskia, Ł. Majchrzyckic and L. Smardza
aInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland bFaculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland cWCZT, Adam Mickiewicz University, Umultowska 89C, 61-614 Poznań, Poland |
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| Fe/Nb/Fe trilayers were prepared at room temperature using UHV magnetron sputtering. The interlayer exchange coupling energy was determined from a shift of the minor hysteresis loop from the origin. Results showed clear antiferromagnetic (AF) coupling maxima near ım6 and 9 monolayers of Nb spacer. Calculations of the interlayer exchange coupling energy were carried out using ab-initio method with localized spin density approximations of exchange-correlation potential. The experimental results were in good agreement with ab-initio calculations. Furthermore, the position of the AF peaks and coupling energy values could be modified using hydrogen. |
DOI: 10.12693/APhysPolA.133.609 PACS numbers: 75.70.-i, 68.55.-a |