The preparation and characterization of the solid solution series CuFexGe1−xS2 (0.5 < x < 1.0) |
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| Authors: | J Ackermann S Soled A Wold E Kostiner |
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| Institution: | 1. Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA;2. the Department of Chemistry, University of Connecticut, Storrs, Connecticut 06268 USA;1. the Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06268 USA |
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| Abstract: | Single crystals of the solid solution series CuFexGe1?xS2 (0.5 < x < 1.0) have been prepared by the chemical vapor transport technique. X-ray diffraction analysis and density measurements have indicated that all members of this system crystallize with the chalcopyrite structure. M?ssbauer spectra show that these crystals contain both iron(II) and iron(III) on tetrahedral sites and that the iron concentration agrees with that determined by chemical analysis. Magnetic susceptibilities for x = 0.53 display antiferromagnetic behavior. The Néel temperature of 12°K and an effective moment of 5.0 BM is observed, which approaches the calculated spin-only moment of 4.92 BM. As x increases, deviations from spin-only behavior occur, indicating complex magnetic interactions. |
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| Keywords: | To whom all correspondence should be addressed |
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