Magnetic and resonant properties of the (NH3)2(CH2)3CoCl3-strongly anisotropic antiferromagnet

Full text: The magnetic static and dynamic properties of the (NH3)2(CH2)3CoCl3 compound have been investigated in the temperature range 0.5-50 K. It is shown that at TN=2.05 K (NH3)2(CH2)3CoCl3 transforms into the antiferromagnetic state. The distinctive feature of this compound is a temperature hysteresis that occurs during the ordered state transition corresponding to the first order phase transition and the existence of a spontaneous magnetic moment along the x-axis. The paramagnetic Curie temperature are determined. The frequency-field dependence of the AFMR spectrum was studied below TN in the xy-plane. The characteristic magnetic parameters of a two-axes antiferromagnet - the low-energy gap and the effective magnetic anisotropy field are determined. (authors)