Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/117663
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Investigation of pressure-induced magnetic transitions in Co xFe3-xO4 spinels |
Autor: | Subías, G. CSIC ORCID; Cuartero, Vera CSIC ORCID; García, Joaquín CSIC ORCID; Blasco, Javier CSIC ORCID; Lafuerza, Sara CSIC ORCID ; Pascarelli, Sakura; Mathon, O.; Strohm, C.; Nagai, K.; Mito, M.; Garbarino, Gastón | Fecha de publicación: | 2013 | Editor: | American Physical Society | Citación: | Physical Review B 87: 094408 (2013) | Resumen: | Room temperature Fe and Co K-edge x-ray magnetic circular dichroism, synchrotron x-ray powder diffraction, and magnetization measurements were carried out to investigate the stability of the ferrimagnetic ground state in CoxFe3-xO4 (x=0, 1, 1.5, and 2) ferrites under pressure up to about 30 GPa using diamond anvil cells. The x-ray magnetic circular dichroism at the Fe K-edge is observed to decrease continuously up to the highest reached pressure by ∼50% in Fe3O4 (at 25 GPa) and by ∼70% in Co1.5Fe1.5O4 (at 16 GPa) and Co2FeO4 (at 21 GPa). In CoFe2O 4, the suppression by ∼80% of the x-ray magnetic circular dichroic signal occurs simultaneously at both Fe and Co K-edges between 24 and 27 GPa. However, a continuous decrease of the dichroic signal with pressure is only observed at the Co K-edge, whereas the Fe K-edge dichroic intensity drops drastically. The synchrotron x-ray powder diffraction measurements indicate the occurrence of structural phase transitions at critical pressures in coincidence with the suppression of ferrimagnetism. In CoFe2O4, bulk magnetization measurements up to 26 GPa confirm the disappearance of ferrimagnetism and indicate an almost linear dependence of the magnetization with the magnetic field in the high pressure phase. We thus conclude that high-pressure CoFe2O4 is either paramagnetic or antiferromagnetic. © 2013 American Physical Society. | Descripción: | Under the terms of the Creative Commons Attribution License 3.0 (CC-BY). | Versión del editor: | http://dx.doi.org/10.1103/PhysRevB.87.094408 | URI: | http://hdl.handle.net/10261/117663 | DOI: | 10.1103/PhysRevB.87.094408 | Identificadores: | doi: 10.1103/PhysRevB.87.094408 issn: 1098-0121 e-issn: 1550-235X |
Aparece en las colecciones: | (ICMA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
pressure-induced magnetic.pdf | 1,49 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
29
checked on 01-abr-2024
WEB OF SCIENCETM
Citations
27
checked on 24-feb-2024
Page view(s)
282
checked on 22-abr-2024
Download(s)
365
checked on 22-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons