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 Csx Ni4II [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 to ∼ 95 K by varying the number of [CrIII (CN)6]3 - vacancies, offering a unique tunability of the magnetocaloric effect in this complex. © 2007 Elsevier B.V. All rights reserved.
Vacancy-driven magnetocaloric effect in Prussian blue analogues / Evangelisti, M.; Manuel, E.; Affronte, M.; Okubo, M.; Train, C.; Verdaguer, M.. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 316:2(2007), pp. e569-e571. [10.1016/j.jmmm.2007.03.038]
Vacancy-driven magnetocaloric effect in Prussian blue analogues
Affronte M.;
2007
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 Csx Ni4II [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 to ∼ 95 K by varying the number of [CrIII (CN)6]3 - vacancies, offering a unique tunability of the magnetocaloric effect in this complex. © 2007 Elsevier B.V. All rights reserved.
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