150045 20260217205523.0 doi 10.1063/10.0026057 sideral 139009 ART-2024-139009 eng Rubín, J. Universidad de Zaragoza (orcid)0000-0003-1029-3751 Low-temperature magnetic interactions in the “butterfly”-type {Fe3GdO2} compound: The persistence of magnetic chains 2024 Access copy available to the general public Unrestricted Heat capacity measurements on the Ln = Gd case of the butterfly molecule series [Fe3Ln(μ3–O)2 (CCl3COO)8(H2O)(THF)3], in brief {Fe3LnO2}, are presented. In the previously studied {Fe3YO2} butterfly, where the magnetic properties stem only from the Fe3+ ions, magnetic chains of spin-5/2 Fe3Y clusters had been identified and described. The substitution of the nonmagnetic Y3+ ion by the magnetic Gd3+ adds magnetic interactions to the clusters, but not magnetic anisotropy. The heat capacity measurement shows an excess over the contribution of the antiferromagnetically coupled Fe3Gd magnetic clusters at very low temperature, which can be described as magnetic spin-1 chains using a Blume–Capel model. The intercluster interaction constant Jch=−55(5) mK is very similar to that of {Fe3YO2}, which shows that the interaction is mainly controlled by the magnitude of the cluster’s magnetic moment. info:eu-repo/grantAgreement/ES/DGA/E12-20R info:eu-repo/grantAgreement/ES/MICINN/PID2020-115159GB-I00 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 0.8 2024 PHYSICS, APPLIED 172 / 187 = 0.92 2024 Q4 T3 0.2 2024 Physics and Astronomy (miscellaneous) 2024 Q4 0.9 2024 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Arauzo, A. Universidad de Zaragoza (orcid)0000-0002-5999-341X Bartolomé, F. Prodius, D. Bartolomé, J. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 50, 6 (2024), 446-451 Low temp. phys. LOW TEMPERATURE PHYSICS 1063-777X 2568982 http://zaguan.unizar.es/record/150045/files/texto_completo.pdf Postprint 2662599 http://zaguan.unizar.es/record/150045/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:150045 articulos driver 2026-02-17-20:29:31 ARTICLE