An Experimental Analysis of [(CH$_{3})_{3}$NH]CoCl$_{3}$ as a One-Dimensional Ising System Model

The room temperature single crystal structure of linear magnetic chain compound [(CH$_{3})_{3}$NH]CoCl$_{3}$ is reported, along with low temperature magnetic susceptibility and heat capacity measurements. [(CH$_{3})_{3}$NH]CoCl$_{3}$ single crystals were grown through slow evaporation and seed crystal methods. The compound crystallizes an orthorhombic structure with a$=$ 7.2716 {\AA} b$=$ 8.0983 {\AA} and c$=$ 16.6473 {\AA}, in accordance with previous literature$^{1}$. Small crystals grown initially via aqueous solvent evaporation were used to seed a supersaturated aqueous solution, resulting in crystals larger than previously reported. These crystals also experienced sensitivity to the Florida ambient, with crystals acquiring enough water from the humid air to dissolve. [(CH$_{3})_{3}$NH]CoCl$_{3}$ is of interest because it structurally realizes a one-dimensional spin Ising system. The Ising model is investigated by heat capacity and magnetic susceptibility measurements, the latter by applying magnetic fields perpendicular to the c- and b-axis at low temperature, using a SQUID magnetometer.