Abstract
We study the magnetic and magnetothermal properties of a magnetically isotropic high-spin molecular nanomagnet containing 17 Fe3+ ions per molecule linked via oxide and hydroxide ions. 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. These characteristics result in a large magnetocaloric effect in the liquid-helium temperature range, e.g. -Delta S-m up to 8.9 J Kg(-1) K-1 for a 7 T applied-field change, suggesting that the Fe-17 molecular nanomagnet can potentially be employed as a low-temperature magnetic refrigerant.
| Original language | English |
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| Title of host publication | 23RD IIR INTERNATIONAL CONGRESS OF REFRIGERATION |
| Place of Publication | PARIS |
| Publisher | INT INST REFRIGERATION |
| Pages | 666-672 |
| Number of pages | 7 |
| ISBN (Print) | 978-2-913149-88-5 |
| Publication status | Published - 2011 |
| Event | 23rd International-Institute-of-Refrigeration(IIR) International Congress of Refrigeration - Prague Duration: 20 Aug 2011 → 26 Aug 2011 |
Conference
| Conference | 23rd International-Institute-of-Refrigeration(IIR) International Congress of Refrigeration |
|---|---|
| City | Prague |
| Period | 20/08/11 → 26/08/11 |