Magnetic Anisotropy in Eus-pbs Multilayers |
| T. Storya, C.H.W. Swüsteb, H.J.M. Swagtenb, W.J.M. de Jongeb, A. Stachow-Wójcikc, A. Twardowskic, M. Arciszewskaa, W. Dobrowolskia, R.R. Gałązkaa and A.Yu. Sipatovd a Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland b Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands c Institute of Experimental Physics, Warsaw University Hoza 69, 00-681 Warsaw, Poland d Kharkov = State Polytechnical University, 21, Frunze Street, 310002 Kharkov, Ukraine |
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| We present the results of ferromagnetic resonance studies of the thickness dependence of magnetic anisotropy in 2 series of EuS-PbS multilayers grown on (111) BaF2 and (100) KCl substrates with the EuS thickness varying in the range d=6-70 Å. The anisotropy constant K was found to follow the dependence K(d)=KV+2KS/d , with the surface term KS larger for layers grown on BaF2 as compared to KCl. This difference is discussed in terms of different thermal stress-induced distortions of cubic crystal lattice of EuS. We found that the thickness of EuS layer required for the perpendicular (to the layer) magnetization is d ≤ 2-3 Å, i.e., it is below 1 monolayer. |
| DOI: 10.12693/APhysPolA.97.435 PACS numbers: 75.50.Pp, 75.70.Ak |