Magnetic Properties of (CuxMn1 - x)3[Cr(CN)6]2·zH2O Complexes

M. Vavraa, b, M. Antoňáka, Z. Jagličićc, M. Mihalika, M. Mihalikd, K. Csacha and M. Zentkováa aInstitute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia bInstitute of Chemistry, P.J. Šafárik University, Moyzesova 11, 041 54 Košice, Slovakia cInstitute of Mathematics, Physics and Mechanics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia dBENSC - Helmholtz-Zentrum, Glienicker Str. 100, 141 09 Berlin, Germany

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Magnetization measurements were performed on the (CuxMn1 - x)3[Cr(CN)6]2· zH2O molecule-based magnets where x=0.0, 0.2, 0.25, 0.3, 0.35 0.4, 0.6, 0.8 and 1.0. Both the Curie temperature and saturated magnetization at first decrease with increasing value of x reaching the minimal value of TC = 49.7 K and 0.17 μB for x=0.2 and then increase with substitution. The pronounced hysteretic behavior between zero-field cooled and field cooled regimes was observed for all samples. Magnetization changes the sign of magnetic polarization in zero-field cooled magnetization curve at the compensation temperature Tcomp = 16 K for sample with x = 0.4. Our results indicate that the system behaves as mixed-ferri-ferromagnetic system.

DOI: 10.12693/APhysPolA.118.998 PACS numbers: 75.30.Kz, 75.30.Cr