Vacancy-driven magnetocaloric effect in Prussian blue analogues

Marco Evangelisti; Esperanca Manuel; Marco Affronte; Masashi Okubo; Cyrille Train; Michel Verdaguer

doi:10.1016/j.jmmm.2007.03.038

Vacancy-driven magnetocaloric effect in Prussian blue analogues

Materials Science 2009-11-11 v1

Authors: Marco Evangelisti , Esperanca Manuel , Marco Affronte , Masashi Okubo , Cyrille Train , Michel Verdaguer

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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 Cs_xNi^II_4[Cr^III(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 [Cr^III(CN)_6]^3- vacancies, offering an unique tunability of the magnetocaloric effect in this complex.

Cite

@article{arxiv.cond-mat/0605228,
  title  = {Vacancy-driven magnetocaloric effect in Prussian blue analogues},
  author = {Marco Evangelisti and Esperanca Manuel and Marco Affronte and Masashi Okubo and Cyrille Train and Michel Verdaguer},
  journal= {arXiv preprint arXiv:cond-mat/0605228},
  year   = {2009}
}

Comments

6 pages, 4 figures, JEMS06

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