Cryogenic magnetocaloric effect in the Fe 17 molecular nanomagnet

Ian A. Gass, Euan K. Brechin, Marco Evangelisti

Research output: Contribution to journalArticlepeer-review


We study the magnetothermal properties of magnetically isotropic high-spin molecular nanomagnets containing 17 Fe 3+ ions per molecule linked via oxide and hydroxide ions, packed in a crystallographic cubic symmetry. Low-temperature magnetization and heat capacity experiments reveal that each molecular unit carries a net spin ground state as large as S = 35/2 and a magnetic anisotropy as small as D = 0.023 K, while no magnetic order, purely driven by dipolar interactions, is to be expected down to very-low temperatures. These characteristics suggest that the Fe17 molecular nanomagnet can potentially be employed as a sub-Kelvin magnetic refrigerant.
Original languageEnglish
Pages (from-to)1177-1180
Number of pages4
Publication statusPublished - 28 Jun 2012


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