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2D to 3D Magnetism in Synthetic Micas.
Rosas-Huerta, José Luis; Wolber, Jonas; Minaud, Claire; Fabelo, Oscar; Ritter, Clemens; Mentré, Olivier; Arévalo-López, Ángel M.
Afiliación
  • Rosas-Huerta JL; Unité de Catalyse et Chimie du Solide (UCCS) - Université de Lille - Centrale Lille, Université Artois, ENSCL, UMR CNRS 8181, Lille, F-59000, France.
  • Wolber J; Unité de Catalyse et Chimie du Solide (UCCS) - Université de Lille - Centrale Lille, Université Artois, ENSCL, UMR CNRS 8181, Lille, F-59000, France.
  • Minaud C; Institut Laue-Langevin, BP 156, Grenoble, Cedex, 38042, France.
  • Fabelo O; Unité de Catalyse et Chimie du Solide (UCCS) - Université de Lille - Centrale Lille, Université Artois, ENSCL, UMR CNRS 8181, Lille, F-59000, France.
  • Ritter C; Institut Laue-Langevin, BP 156, Grenoble, Cedex, 38042, France.
  • Mentré O; Institut Laue-Langevin, BP 156, Grenoble, Cedex, 38042, France.
  • Arévalo-López ÁM; Unité de Catalyse et Chimie du Solide (UCCS) - Université de Lille - Centrale Lille, Université Artois, ENSCL, UMR CNRS 8181, Lille, F-59000, France.
Adv Sci (Weinh) ; : e2408266, 2024 Sep 20.
Article en En | MEDLINE | ID: mdl-39301880
ABSTRACT
Fe-based mica minerals usually display two opposing magnetic ground states, either they behave as spin-glasses or as layered ferrimagnets. No definite reason has been proposed as an explanation for this duality. This conundrum is unraveled by comparing the synthetic micas KFe3[MGe3]O10X2 with M═Fe and Ga, X═OH- and F-. Neutron diffraction demonstrates a 2D to 3D magnetic transition in KFe3[FeGe3]O10(OH)2 while just hints or no order at all are observed for the fluorides with M═Fe and Ga respectively. The 3D transition is triggered by the presence of iron in the intralayer tetrahedra. DFT+U calculations show that the magnetic exchange couplings between the previously believed solely magnetic octahedral layers would otherwise be frustrated without this intralayer iron.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Sci (Weinh) Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Sci (Weinh) Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania