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dc.contributor.author
Lora Serrano, R.  
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Garcia, Daniel Julio  
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Betancourth Giraldo, Diana Maria  
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Amaral, R. P.  
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Camilo, N. S.  
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Estévez Rams, E.  
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Ortellado G. Z., L.A.  
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Pagliuso, P. G.  
dc.date.available
2018-09-17T13:51:13Z  
dc.date.issued
2016-05  
dc.identifier.citation
Lora Serrano, R.; Garcia, Daniel Julio; Betancourth Giraldo, Diana Maria; Amaral, R. P.; Camilo, N. S.; et al.; Dilution effects in spin 7/2 systems. The case of the antiferromagnet GdRhIn5; Elsevier Science; Journal of Magnetism and Magnetic Materials; 405; 5-2016; 304-310  
dc.identifier.issn
0304-8853  
dc.identifier.uri
http://hdl.handle.net/11336/59838  
dc.description.abstract
We report the structural and magnetic characterization of La-substituted Gd1-xLaxRhIn5(x≤0.50) antiferromagnetic (AFM) compounds. The magnetic responses of pure GdRhIn5 are well described by a S=7/2 Heisenberg model. When Gd3+ ions are substituted by La3+, the maximum of the susceptibility and the inflection point of the magnetic specific heat are systematically shifted to lower temperatures accompanied by a broadening of the transition. The data is qualitatively explained by a phenomenological model which incorporates a distribution of magnetic regions with different transition temperatures (T N ). The universal behaviour of the low temperature specific heat is found for La (vacancies) concentrations below x=0.40 which is consistent with spin wave excitations. For x=0.5 this universal behaviour is lost. The sharp second order transition of GdRhIn5 is destroyed, as seen in the specific heat data, contrary to what is expected for a Heisenberg model. The results are discussed in the context of the magnetic behaviour observed for the La-substituted (Ce,Tb,Nd)RhIn5 compounds.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Antiferromagnetism  
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Heisenberg Model  
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Magnetic Dilution  
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Substitutional Disorder  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Dilution effects in spin 7/2 systems. The case of the antiferromagnet GdRhIn5  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-09-10T15:53:48Z  
dc.journal.volume
405  
dc.journal.pagination
304-310  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Lora Serrano, R.. Universidade Federal de Uberlandia; Brasil  
dc.description.fil
Fil: Garcia, Daniel Julio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Betancourth Giraldo, Diana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina  
dc.description.fil
Fil: Amaral, R. P.. Universidade Federal de Uberlandia; Brasil  
dc.description.fil
Fil: Camilo, N. S.. Universidade Federal de Uberlandia; Brasil  
dc.description.fil
Fil: Estévez Rams, E.. Universidad de la Habana; Cuba  
dc.description.fil
Fil: Ortellado G. Z., L.A.. Universidade Federal de Uberlandia; Brasil  
dc.description.fil
Fil: Pagliuso, P. G.. Universidad Estatal de Campinas; Brasil  
dc.journal.title
Journal of Magnetism and Magnetic Materials  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jmmm.2015.12.093  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S030488531530963X