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VOLUME 57 (1993) | ISSUE 12 | PAGE 793
Experimental evidence for the existence of afmons in the antiferromagnetic semiconductor Cu0.75Co0.25Cr1.625Sb0.375S4
A giant negative magnetoresistance, ~ 16% in a field of 27 kOe, has been observed along with a positive value Θ = 45 К in the antiferromagnetic semiconductor Cuo.75Coo.25Cr! .625^0.37584. This is a solid solution of CuCri 5Sbo.5S4, with a checkerboard antiferromagnetic structure (with a paramagnetic Curie temperature Θ= —156 К), and the ferrimagnet CoCr2S4. These experimental facts are evidence for the existence of afmons in this compound.