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Transport and Magnetic Properties of Pb_{1-x}Mn_xTe Doped with Cr and Mo

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Artamkin A., Kozhanov A., Arciszewska M., Dobrowolski W., Story T., Slynko E., Slynko W., Khokhlov D.

Acta Physica Polonica A

2004

vol. 106

issue 2

223-231

Transport and magnetic properties of Pb_{1-x}Mn_xTe (x<0.18) semiconductor alloys doped with Cr or Mo are investigated in a broad range of temperatures and magnetic fields. In PbMnTe(Cr) alloys the Fermi level may be pinned either in the conduction band or in the energy gap, depending on Mn concentration. In PbMnTe(Mo) alloys the pinning of the Fermi level is observed in the valence band as well as in the energy gap. In the latter case persistent photoconductivity is observed at low temperatures. The analysis of the temperature dependence of magnetic susceptibility shows that PbMnTe alloys doped with Cr or Mo are Curie-Weiss paramagnets revealing weak antiferromagnetic interactions between magnetic ions.

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1 Acta Physica Polonica A

1 2004

1 Arciszewska M.

1 Artamkin A.

1 Dobrowolski W.

1 Khokhlov D.

1 Kozhanov A.

1 Slynko E.

1 Slynko W.

1 Story T.

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Transport and Magnetic Properties of Pb_{1-x}Mn_xTe Doped with Cr and Mo