Magnetization and Susceptibility of Sn1-xGdxTe |
| M. Górskaa , J.R. Andersonb , S.M. Greenb and Z. Golackia a)Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland b)Department of Physics, University of Maryland, College Park, MD 20742, USA |
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| The magnetization and magnetic susceptibility of Bridgman-grown Sn1-xGdxTe with values of x up to 0.09 have been measured over a temperature range from 2 to 300 K and in magnetic fields up to 5.5 T. The magnetic susceptibility data followed the Curie-Weiss relation with a small Curie temperature that indicated a weak antiferromagnetic coupling among 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 value of the exchange parameter was larger than in Pb1-xGdxTe. The samples were p-type with carrier concentrations up to 1.3 x 1021 cm-3. The ferromagnetic or spin-glass phase due to the RKKY interaction was not observed. |
| DOI: 10.12693/APhysPolA.80.377 PACS numbers: 75.20.Ck, 75.30.Et |