We have investigated the magnetic order in an [Fe₂/(VHₓ)₁₃]×200 superlattice as a function of temperature and hydrogen content in the vanadium layers. A J_⊥-T magnetic phase diagram was established where J_⊥ denotes the interlayer exchange coupling between adjacent Fe planes. We propose that Fe/V superlattices, in which the ratio of interlayer to intralayer coupling can be tuned continuously and reversibly via hydrogen in the nonmagnetic vanadium, offer a new approach for the study of low-dimensional magnetism and crossover effects near the transition from ferromagnetic to antiferromagnetic order.
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Leiner et al. (2003) studied this question.
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