English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/120852
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Magnetic structure and magnetocalorics of GdPO4

AutorPalacios, Elias; Rodríguez-Velamazán, J. A.; Evangelisti, Marco; McIntyre, G. J.; Lorusso, Giulia; Visser, D.; Jongh, L. J. de; Boatner, L. A.
Fecha de publicación2014
EditorAmerican Physical Society
CitaciónPhysical Review B 90: 214423 (2014)
ResumenThe magnetic ordering structure of GdPO4 is determined at T=60 mK by the diffraction of hot neutrons with wavelength λ=0.4696 Å. It corresponds to a noncollinear antiferromagnetic arrangement of the Gd moments with propagation vector k=(1/2,0,1/2). This arrangement is found to minimize the dipole-dipole interaction and the crystal-field anisotropy energy, the magnetic superexchange being much smaller. The intensity of the magnetic reflections decreases with increasing temperature and vanishes at T≈0.8 K, in agreement with the magnetic ordering temperature TN=0.77 K, as reported in previous works based on heat capacity and magnetic susceptibility measurements. The magnetocaloric parameters have been determined from heat capacity data at constant applied fields up to 7 T, as well as from isothermal magnetization data. The magnetocaloric effect, for a field change ΔB=0-7T, reaches -ΔST=375.8mJ/cm3K-1 at T=2.1 K, largely exceeding the maximum values reported to date for Gd-based magnetic refrigerants.
DescripciónUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.90.214423
Identificadoresdoi: 10.1103/PhysRevB.90.214423
issn: 1098-0121
e-issn: 1550-235X
Aparece en las colecciones: (ICMA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
magnetocalorics.pdf593,79 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.