Monte-Carlo Study of Ising Model Ferromagnetic/Antiferromagnetic Spin Frustrated Superlattice

Conventional Monte-Carlo calculations have been carried out to simulate an N×N×N (N=10, 16, 20) Ising superlattice consisting of alternating layers of a ferromagnet and an antiferromagnet with different exchange interaction strengths in the antiferromagnetic layer. With increasing strength of the exchange interaction in antiferromagnetic layers, the ferromagnetic Curie temperature is decreased and the susceptibility is increased in superlattices. The magnetic susceptibility of the ferromagnetic layer is at its maximum value when the magnitudes of ferromagnetic interaction and antiferromagnetic interaction are equal.