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Switching of the Magnetocaloric Effect of MnII Glycolate by Water Molecules |
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| Authors: | Yan‐Cong Chen Fu‐Sheng Guo Jun‐Liang Liu Ji‐Dong Leng Dr. Peter Vrábel Prof. Dr. Martin Orendáč Dr. Jan Prokleška Prof. Dr. Vladimír Sechovský Prof. Dr. Ming‐Liang Tong |
| Affiliation: | 1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat‐Sen University, Guangzhou, 510275 (P. R. China);2. Centre of Low Temperature Physics Faculty of Science, P.J. ?afárik University and Institute of Experimental Physics SAS, Park Angelinum 9, 041 54 Ko?ice (Slovakia);3. Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, CZ‐12116 Prague 2 (Czech Republic) |
| Abstract: | The transformation of MnII glycolates (glc) between the three‐dimensional coordination polymer [Mn(glc)2]n ( 1 ) and discrete mononuclear phase [Mn(glc)2(H2O)2] ( 2 ) can be reversibly switched by water molecules, which dramatically change the magnetocaloric effect (MCE) of MnII glycolates from the maximum of 6.9 J kg?1 K?1 in 1 to 60.3 J kg?1 K?1 in 2 . This case example reveals that the effect of magnetic coupling on MCE plays a dominant role over that of other factors such as magnetic density for 3d‐type magnetic refrigerants. |
| Keywords: | coordination polymers glycolates magnetic properties magnetocaloric effect manganese |