Magnetic phase transition of FeF2/ZnF2 superlattices

Abstract Fluoride superlattices of FeF 2 /ZnF 2 were prepared on single-crystal substrates, Al 2 O 3 (1 0 1 0) and MgO(1 0 0). With a decrease in the thickness of the FeF 2 layer, a reduction of the Neel temperature was observed for both the FeF 2 layers of the Ising and in-plane spin systems. In the FeF 2 layers parallel to the c -plane, a frustration effect due to competing interactions between Fe 2+ ions was detected.