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Temperature Dependence of Antiferromagnetic Interlayer Exchange Coupling in EuS-PbS Multilayers

100%

Chernyshova M., Kowalczyk L., Baran M., Szczerbakow A., Story T., Smits C., Filip A., Swagten H., de Jonge W., Sipatov A.

Acta Physica Polonica A

2004

vol. 105

issue 6

599-605

Antiferromagnetic interlayer exchange coupling in semiconductor EuS-PbS-EuS ferromagnetic trilayers grown on PbS (001) substrates with ultrathin (0.6-1.2 nm) nonmagnetic PbS spacers is studied by SQUID magnetometry and model calculations. Analysis of the experimentally observed magnetic field and temperature dependence of the magnetization of EuS-PbS structures reveals a rapid decrease in the interlayer coupling energy with increasing temperature indicating a temperature dependence of the microscopic coupling mechanism acting in these all-semiconductor ferromagnetic/nonmagnetic multilayers.

Magnetic and Structural Properties of EuS-PbS Multilayers Grown on n-PbS (100) Substrates

81%

Chernyshova M., Łusakowska E., Domukhovski V., Grasza K., Szczerbakow A., Wrotek S., Kowalczyk L., Story T., Smits C., Swagten H., De Jonge W., Palosz W., Sipatov A., Volobuev V.

issue 4-5

609-615

Magnetic properties of semiconductor EuS(t)-PbS(d)-EuS(t) ferromagnetic trilayers (t=30÷300Å and d=7.5÷70Å) grown on n-type monocrystalline PbS (100) substrate were studied by SQUID magnetometry and ferromagnetic resonance technique yielding, in particular, the dependence of the ferromagnetic Curie temperature on the thickness of the EuS layer. Structural parameters of layers were examined by X-ray powder diffraction analysis. A high structural quality of the substrate and the multilayer was verified by the measurements of the X-ray rocking curve width indicating the values of the order of 100 arcsec and by atomic force microscopy revealing the presence on the cleft PbS surface regions practically flat in the atomic scale over the area of 1×0.1μm^2.

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2 Acta Physica Polonica A

1 2004

1 2002

2 Chernyshova M.

2 Kowalczyk L.

2 Sipatov A.

2 Smits C.

2 Story T.

2 Swagten H.

2 Szczerbakow A.

1 Baran M.

1 De Jonge W.

1 Domukhovski V.

1 Filip A.

1 Grasza K.

1 Palosz W.

1 Volobuev V.

1 Wrotek S.

1 de Jonge W.

1 Łusakowska E.

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Temperature Dependence of Antiferromagnetic Interlayer Exchange Coupling in EuS-PbS Multilayers

Magnetic and Structural Properties of EuS-PbS Multilayers Grown on n-PbS (100) Substrates