Magnetic properties of Gd-doped PbTe
Keyword(s):
Electron paramagnetic resonance (EPR) and low-field ac susceptibility measurements were done on the rare-earth-doped semimagnetic semiconductor PbGdTe for the Gd composition range 100 ppm–10 at.%. For the lower concentrations, the EPR results indicate a fully resolved fine structure appropriate to the Gd3+ ion and g values close to the free-electron value. Susceptibility results show Curie–Weiss behaviour in all samples for temperatures above 10 K, small negative Curie temperatures, and Peff values corresponding to a Gd spin of 7/2. Deviations from this simple behaviour are observed for Gd concentrations greater than 5 at.% and for temperatures below 10 K. Evidence is observed for an antiferromagnetic clustering of impurity spins.
1998 ◽
Vol 275-276
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pp. 65-72
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1989 ◽
Vol 90
(6)
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pp. 3401-3402
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2018 ◽
Vol 20
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pp. 15528-15534
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1991 ◽
Vol 172-174
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pp. 459-465
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