Stone-Wales defected molecular-based AFeIIFeIII(C2O4)3 nanoribbons: Thermal and magnetic properties

Thermal and magnetic properties of pristine and Stone-Wales (SW) defected zigzag mixed spin-2,5/2AFeIIFeIII(C2O4)3 nanoribbons have been investigated using Monte Carlo simulations. The variation in thermal and magnetic properties has been examined in terms of the number and the positions of SW-defects relative to the edges and the widths of ribbons, as well as to the temperature. Many interesting phenomena have been obtained, such as first and second order phase transitions, N-type compensation behavior and compensation temperature originating mainly from the antiferromagnetic exchange interaction between magnetic ions FeIII and FeII. Furthermore, different hysteresis loop behaviors, such as a single and quintuple hysteresis loops which exhibit different number of steps and various shapes have been observed.