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Magnetic Properties of Pbl-xGdxTe

Published online by Cambridge University Press:  26 February 2011

M. Gorska ,
J. R. Anderson  and
Z. Golacki
M. Gorska
Affiliation:
Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
J. R. Anderson
Affiliation:
Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
Z. Golacki
Affiliation:
Institute of Physics, Polish Academy of Sciences, Warsaw, Poland
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Abstract

The magnetization and magnetic susceptibility of Bridgman-grown Pb1-xGdxTe have been measured over a temperature range from 2 to 300 K and in magnetic fields from 0.01 to 50 κOe. The x-values of the crystals ranged from 0.03 to 0.07. The magnetic susceptibility followed a Curie-Weiss behavior, χ = C/(T + θ), with positive θ implying an antiferromagnetic exchange interaction between Gd ions. The magnetic field dependence of the magnetization was fitted to a modified Brillouin function with parameter values that agreed fairly well with those from Curie-Weiss plots. The magnitude of θ was comparable to the value found for Pb1-xMnxTe for similar x values; but since the ion spin is bigger for Gd this suggests that the exchange interaction in Gd-doped PbTe is roughly half the value in Mn-doped PbTe.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 89: Symposium Q – Diluted Magnetic (Semimagnetic) Semiconductors , 1986 , 119
Copyright
Copyright © Materials Research Society 1987

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References

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