Percolation-induced ferrimagnetism from vacancy order in [Gua]Mn1–xFe2x/3(HCOO)3 hybrid perovskites
Johnathan Bulled,
Alexandra Willis,
Zoe Faure Beaulieu
et al.
Abstract:We report the magnetic behaviour of the hybrid perovskites [Gua]Mn1–xFe2x/3(HCOO)3 (0 < x < 0.88), showing that vacancy ordering drives bulk ferrimagnetism for x > 0.6. The behaviour is rationalised in terms of a simple microscopic model of percolation-induced ferrimagnetism. Monte Carlo simulations driven by this model reproduce the experimental dependence of magnetic susceptibility on x and show that, at intermediate compositions, domains of short-range vacancy order lead to the emergence of local m… Show more
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