Magnetic properties of KRE(WO4)2 (RE=Gd, Yb, Tm) single crystals

Magnetic properties of KGd(WO4)2, KYb(WO4)2 and KTm(WO4)2 single crystals have been studied. Temperature and field dependences of the magnetization along the main magnetic axes and angular dependence of the magnetization in the planes settled on the magnetic axes were recorded in the temperature range from 2 up to 100 K and in magnetic field up to 9 T. Paramagnetic Curie temperatures, g-factors and exchange interaction parameters were determined. Different theoretical models were used to describe magnetic properties of KGd(WO4)2 and KYb(WO4)2 crystals.