| Title: |
Giant magnetocaloric effect in a rare-earth-free layered coordination polymer at liquid hydrogen temperatures |
| Authors: |
Levinsky, J. J.B.; Beckmann, B.; Gottschall, T.; Koch, D.; Ahmadi, M.; Gutfleisch, O.; Blake, G. R. |
| Source: |
Levinsky, J J B, Beckmann, B, Gottschall, T, Koch, D, Ahmadi, M, Gutfleisch, O & Blake, G R 2024, 'Giant magnetocaloric effect in a rare-earth-free layered coordination polymer at liquid hydrogen temperatures', Nature Communications, vol. 15, no. 1, 8559. https://doi.org/10.1038/s41467-024-52837-x |
| Publication Year: |
2024 |
| Collection: |
University of Groningen research database |
| Description: |
Magnetic refrigeration, which utilizes the magnetocaloric effect, can provide a viable alternative to the ubiquitous vapor compression or Joule-Thompson expansion methods of refrigeration. For applications such as hydrogen gas liquefaction, the development of magnetocaloric materials that perform well in moderate magnetic fields without using rare-earth elements is highly desirable. Here we present a thorough investigation of the structural and magnetocaloric properties of a novel layered organic-inorganic hybrid coordination polymer Co 4 (OH) 6 (SO 4 ) 2 [enH 2 ] (enH 2 = ethylenediammonium). Heat capacity, magnetometry and direct adiabatic temperature change measurements using pulsed magnetic fields reveal a field-dependent ferromagnetic second-order phase transition at 10 K C < 15 K. Near the hydrogen liquefaction temperature and in a magnetic field change of 1 T, a large maximum value of the magnetic entropy change, ΔS M Pk = − 6.31 J kg −1 K −1 , and an adiabatic temperature change, ΔT ad = 1.98 K, are observed. These values are exceptional for rare-earth-free materials and competitive with many rare-earth-containing alloys that have been proposed for magnetic cooling around the hydrogen liquefaction range. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
2041-1723 |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/39362871; info:eu-repo/semantics/altIdentifier/hdl/https://hdl.handle.net/11370/0a9c9214-da22-42cc-8f28-1186efc00e50; info:eu-repo/semantics/altIdentifier/pissn/2041-1723 |
| DOI: |
10.1038/s41467-024-52837-x |
| Availability: |
https://hdl.handle.net/11370/0a9c9214-da22-42cc-8f28-1186efc00e50; https://research.rug.nl/en/publications/0a9c9214-da22-42cc-8f28-1186efc00e50; https://doi.org/10.1038/s41467-024-52837-x; https://pure.rug.nl/ws/files/1149513225/s41467-024-52837-x.pdf; https://www.scopus.com/pages/publications/85205605684 |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.D000BCCC |
| Database: |
BASE |