Vacancy-driven magnetocaloric effect in Prussian blue analogues
Abstract
We experimentally show that the magnetocaloric properties of molecule-based Prussian blue analogues can be adjusted by controlling during the synthesis the amount of intrinsic vacancies. For CsxNiII4[CrIII(CN)6](8+x)/3, we find indeed that the ferromagnetic phase transition induces significantly large magnetic entropy changes, whose maxima shift from 68 K to 95 K by varying the number of [CrIII(CN)6]3- vacancies, offering an unique tunability of the magnetocaloric effect in this complex.
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