Temperature dependence of the magnetic interlayer ordering in Fe(3) / V (14)Hx (001) superlattices

The magnetic interlayer ordering in Fe(3)/V (14)Hx (001) superlattices exhibits dramatic changes on changing the hydrogen concentration. From initial antiferromagnetic (AF) coupling with TN=370(7)K, the introduction of H (H/V atomic ratio of 0.06) gives rise to ferromagnetic (FM) alignment at room temperature. When cooled, the magnetic ordering exhibits a transition from FM to a canted state below 200 K. Further increase of the hydrogen content (H/V ≈1) gives rise to FM-ordering at temperatures between 30 and 300 K.