Interlayer Exchange Coupling in Semiconductor EuS-PbS Ferromagnetic Wedge Multilayers

• Authors: L. Kowalczyk , S. Wrotek , P. Dziawa , V. Osinniy , M. Szot , T. Story , A. Sipatov , V. Volobuev , A. Fedorov
• Languages of publication: EN

Abstracts

EN

Antiferromagnetic interlayer coupling between ferromagnetic layers of EuS via nonmagnetic PbS spacer layer was experimentally studied in EuS-PbS wedge multilayers grown on KCl (001) substrates with EuS thickness of 6 nm and PbS thickness varying in the wedges in the range 0.3-6 nm (i.e. n=1-20 monolayers). Measurements of magnetic hysteresis loops of EuS-PbS multilayers performed in the temperature range 5-30 K by superconducting (SQUID) and magneto-optical magnetometers revealed a rapid increase in saturation magnetic field in multilayers with PbS spacer thinner than about 1.5 nm. It shows a monotonic increase in interlayer coupling strength with a decreasing PbS spacer thickness, in qualitative agreement with 1/2^n dependence predicted theoretically for semiconductor magnetic superlattices.

Keywords

EN

75.20.Ck; 75.30.Et

Discipline

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

• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 2
• Pages: 225-231

Dates

published

2006-08

received

2006-06-17

Contributors

author

L. Kowalczyk

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

author

S. Wrotek

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

author

P. Dziawa

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

author

V. Osinniy

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

author

M. Szot

• 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

A. Sipatov

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

author

V. Volobuev

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

author

A. Fedorov

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

References

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Identifiers

DOI

10.12693/APhysPolA.110.225