Fig. 1
From: Dimensional crossover in a layered ferromagnet detected by spin correlation driven distortions

Characterization of long-range spin ordering in CrSiTe3. Temperature dependence of the a c-axis thermal expansion coefficient, b magnetic susceptibility and (left inset) magneto-optical Kerr rotation angle from a bulk single crystal of CrSiTe3 showing the clear onset of long-range magnetic order at Tc ~ 31 K. Note the absence of any features above Tc in all of these measurements. Right inset shows the crystal structure of CrSiTe3. In the FM phase, the Cr3+ spins all point parallel to the c-axis