Magnetic ordering of Dy~(3+) ion in low-dimensional CsDy(WO_4)_2 double tungstate

摘要

Magnetic ordering of Dy~(3+) ion in low-dimensional magnet CsDy(WO_4)_2, (CsDyW) has been first studied by means of measurements of the low temperature specific heat over a temperature range of 0.5-23 K. The ordering temperature (T_N) of the Dy~(3+) sublattice was established to be 1.34 K. The experimental data indicate on the antiferromagnetic (AFM) character of Dy~(3+) ions interactions. The magnetic behavior above and below T_N is discussed in the framework of different theoretical models.