ACTA

Effect of Pressure on Magnetic Properties of (NH₃OH)₂CoF₄ Fluoro-Metal Complex

Z. Jagličić^a, M. Zentková^b, M. Mihalik^b, M. Drofenik^c, M. Kristl^c, B. Dojer^c, M. Kasunič^d, A. Golobič^d, M. Jagodič^a,e and Z. Arnold^f
^aInstitute of Mathematics, Physics and Mechanics and Faculty of Civil and Geodetic Engineering, Jadranska 19, SI-1000 Ljubljana, Slovenia
^bInstitute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
^cFaculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Slovenia
^dFaculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Slovenia
^eEN-FIST Centre of Excellence, Dunajska 156, 1000 Ljubljana, Slovenia
^fInstitute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

Full Text PDF

Effect of pressure on magnetic properties of a bulk fluoro-metal complex (NH₃OH)₂MF₄ was studied. Magnetization measurements suggest that a ferromagnetic transition at T_C1 = 47 K is followed by a ferrimagnetic one at T_C2 = 3 K. Both transition temperatures are pressure dependent with the pressure coefficients dT_C1/ dp = - 2.6 K/GPa and dT_C2/ dp = 0.26 K/GPa. The opposite sign of the coefficients is an additional indication of a different nature (ferromagnetic/antiferromagnetic) of these two transitions. The effect of pressure on low field magnetization and exchange bias phenomena is small but still visible.

DOI: 10.12693/APhysPolA.118.1074
PACS numbers: 75.47.Lx, 75.30.Cr, 75.30.Kz