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2 Acta Physica Polonica A

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Magnetic Anisotropy in Pb_{1-x-y}Sn_{y}Mn_{x}Te Studied by Ferromagnetic Resonance

100%

Eggenkamp P. , Story T. , Swüste C. , Swagten H. , de Jonge W.

Acta Physica Polonica A

1993

tom 84

nr 4

641-644

We will report on the anisotropy in (Pb)SnMnTe, studied by ferromagnetic resonance. We have found a cubic anisotropy with a = 73 × 10^{-4} cm^{-1} for Sn_{1-x}Mn_{x}Te and a = 200 × 10^{-4} cm^{-1} for Pb_{0.28-x}Sn_{0.72}Mn_{x}Te. We will indicate some possible explanations for this anomalously large anisotropy.

Magnetic Anisotropy in Eus-pbs Multilayers

72%

Story T. , Swüste C. , Swagten H. , de Jonge W. , Stachow-Wójcik A. , Twardowski A. , Arciszewska M. , Dobrowolski W. , Gałązka R. , Sipatov A.

Acta Physica Polonica A

2000

tom 97

nr 3

435-438

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) BaF_{2} 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)=K_{V}+2K_{S}/d , with the surface term K_{S} larger for layers grown on BaF_{2} 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.