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Magnetic Properties of EuS-SrS Semiconductor Multilayer Structures

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Szot M., Kowalczyk L., Deptuła P., Domukhovski V., Osinniy V., Smajek E., Szczerbakow A., Sipatov A., Volobuev V., Fedorov A., Story T.

Acta Physica Polonica A

2007

vol. 112

issue 2

419-424

Magnetic and structural properties of EuS-SrS semiconductor multilayers were studied by SQUID and magneto-optical Kerr effect magnetometry techniques and by X-ray diffraction method. The multilayers composed of monocrystalline, lattice matched ferromagnetic EuS layers (thickness 35-50Å) and nonmagnetic SrS spacer layers (thickness 45-100Å) were grown epitaxially on KCl (001) substrates with PbS buffer layer. Ferromagnetic transition in EuS-SrS multilayers was found at the Curie temperature T_c=17 K. The multilayers exhibit only weak in-plane magnetic anisotropy with [110] easy magnetization axis. Coercive field of EuS-SrS multilayers shows a linear increase with decreasing temperature. Magneto-optical mapping of magnetic hysteresis loops of the multilayers revealed good spatial homogeneity of their magnetic properties.

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1 Acta Physica Polonica A

1 2007

1 Deptuła P.

1 Domukhovski V.

1 Fedorov A.

1 Kowalczyk L.

1 Osinniy V.

1 Sipatov A.

1 Smajek E.

1 Story T.

1 Szczerbakow A.

1 Szot M.

1 Volobuev V.

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Magnetic Properties of EuS-SrS Semiconductor Multilayer Structures