Abstract
Magnetic properties of Fex(Cu0.5In0.5)1– xCr2S4 (x = 0.6–1) solid solutions between ferrimagnet FeCr2S4 (TC = 170 K) and antiferromagnet Cu0.5In0.5Cr2S4 (TN = 28 K) have been studied at temperatures in the range 4–300 K in permanent magnetic fields H = 7 960 A/m (100 Oe) and 3.58 × 106 A/m (45 kOe). Magnetic transition temperatures have been determined. The divergence between ZFC and FC curves below the magnetic ordering temperature has been observed for all compositions. An Fe0.7Cu0.15In0.15Cr2S4 sample has the highest coercive force. The interpretation of results is based on the account for the system’s coercivity and the domain wall pinning in the test samples by nonmagnetic copper and indium ions.
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