Magnetic Properties of EuS/Co Multilayers on KCl and BaF₂ Substrates

• Authors: M. Szot , L. Kowalczyk , T. Story , V. Domukhovski , W. Knoff , K. Gas , V. Volobuev , A. Sipatov , A. Fedorov
• Languages of publication: EN

Abstracts

EN

Magnetic and structural properties of EuS/Co multilayers were studied by magnetic optical Kerr effect and SQUID magnetometry techniques and by X-ray diffraction method. The multilayers containing monocrystalline, ferromagnetic EuS layer (thickness 35-55 Å) and metallic Co layer (thickness 40-250 Å), were grown on KCl (001) and BaF₂ (111) substrates using high vacuum deposition technique employing electron guns for Co and EuS. All investigated EuS/Co multilayers exhibit ferromagnetic properties at room temperature due to Co layer with the ferromagnetic transition in EuS layer clearly marked upon cooling below 16 K. In EuS/Co/EuS trilayers grown on KCl substrate the antiferromagnetic alignment of magnetization vectors of Co and EuS layers was experimentally observed as a characteristic low field plateau on magnetization hysteresis loops and a decrease in multilayer magnetization below 16 K. In Co/EuS bilayers the characteristic temperature dependent shift of magnetization loops was found due to exchange bias effect attributed to the CoO/Co interface formed by the oxidation of the top Co layer.

Keywords

EN

75.30.Et; 75.75.+a

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 5
• Pages: 1397-1402

Dates

published

2008-11

received

2008-06-07

Contributors

author

M. Szot

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

L. Kowalczyk

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

T. Story

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

V. Domukhovski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

W. Knoff

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

K. Gas

• Department of Mathematics and Natural Sciences, College of Science, Cardinal S. Wyszyński University, Dewajtis 5, 01-185 Warsaw, Poland

author

V. Volobuev

• National Technical University KPI, 21 Frunze Street, 61002 Kharkov, Ukraine

author

A. Sipatov

• National Technical University KPI, 21 Frunze Street, 61002 Kharkov, Ukraine

author

A. Fedorov

• Institute for Scintillation Materials, NASU, Lenin Ave. 60, 61001 Kharkov, Ukraine

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Identifiers

DOI

10.12693/APhysPolA.114.1397