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Magnetic and Magneto-Transport Characterization of (Ga,Mn)(Bi,As) Epitaxial Layers

100%

Levchenko K., Andrearczyk T., Domagala J., Wosinski T., Figielski T., Sadowski J.

Acta Physica Polonica A

2014

vol. 126

issue 5

1121-1124

High-quality layers of the (Ga,Mn)(Bi,As) quaternary compound semiconductor have been grown by the low-temperature molecular-beam epitaxy technique. An effect of Bi incorporation into the (Ga,Mn)As ferromagnetic semiconductor and the post-growth annealing treatment of the layers have been investigated through examination of their magnetic and magneto-transport properties. Significant enhancement of the planar Hall effect magnitude upon addition of Bi into the layers is interpreted as a result of increased spin-orbit coupling in the (Ga,Mn)(Bi,As) layers.

Effect of Misfit Strain in (Ga,Mn)(Bi,As) Epitaxial Layers on Their Magnetic and Magneto-Transport Properties

84%

Levchenko K., Andrearczyk T., Domagała J., Sadowski J., Kowalczyk L., Szot M., Figielski T., Wosiński T.

Acta Physica Polonica A

2016

vol. 129

issue 1a

A-90-A-93

Effect of misfit strain in the layers of (Ga,Mn)(Bi,As) quaternary diluted magnetic semiconductor, epitaxially grown on either GaAs substrate or (In,Ga)As buffer, on their magnetic and magneto-transport properties has been investigated. High-resolution X-ray diffraction, applied to characterize the structural quality and misfit strain in the layers, proved that the layers were fully strained to the GaAs substrate or (In,Ga)As buffer under compressive or tensile strain, respectively. Ferromagnetic Curie temperature and magneto-crystalline anisotropy of the layers have been examined by using magneto-optical Kerr effect magnetometry and low-temperature magneto-transport measurements. Post-growth annealing treatment of the layers has been shown to enhance the hole concentration and the Curie temperature in the layers.

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2 Acta Physica Polonica A

1 2016

1 2014

2 Andrearczyk T.

2 Figielski T.

2 Levchenko K.

2 Sadowski J.

1 Domagala J.

1 Domagała J.

1 Kowalczyk L.

1 Szot M.

1 Wosinski T.

1 Wosiński T.

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Magnetic and Magneto-Transport Characterization of (Ga,Mn)(Bi,As) Epitaxial Layers

Effect of Misfit Strain in (Ga,Mn)(Bi,As) Epitaxial Layers on Their Magnetic and Magneto-Transport Properties