Artículo
Canted ferrimagnetism in the distorted double perovskite La3Mn2NbO9
Arciniegas Jaimes, Diana Marcela
; Fuertes, Valeria Cintia
; Blanco, Marìa Cecilia
; Tirao, German Alfredo
; Limandri, Silvina Paola
; Nassif, Vivian M.; Cuello, Gabriel Julio
; Rodríguez, Alejandro; Reguera Ruiz, Edilso Francisco; Carbonio, Raul Ernesto
Fecha de publicación:
02/2021
Editorial:
Elsevier Science SA
Revista:
Journal of Alloys and Compounds
ISSN:
0925-8388
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The synthesis, structural characterization, and magnetic properties of La3Mn2NbO9 double perovskite are reported. The crystal structure has been refined by X-ray and neutron powder diffraction data in the monoclinic space group P21/n. The Mn2+, Mn3+ and Nb5+ cations are distributed at the 2d and 2c Wyckoff sites, with a high cation order degree in the latter, mainly occupied by Mn2+/Mn3+. The Mn3+ presence was established from X-ray Emission Spectroscopy and X-ray Photoelectron Spectroscopy. Rietveld refinements of powder neutron diffraction data show that at room temperature the cell parameters are a= 5.6063(3) Å, b= 5.8155(3) Å, c= 7.9877(2) Å y β= 89.89(1)°. Magnetization measurements indicate the presence of ferromagnetic and antiferromagnetic interactions with TC ∼19 K and TN ∼11 K, respectively, with a magnetic cell of symmetry Γ1(Ag). The analysis of the neutron data suggests a canted ferrimagnetic spin structure where an antiferromagnetic unit-cell in a and c axis, and ferromagnetic in b axis with a propagation vector k= (0 ½ 0) was used. The effective magnetic moment obtained experimentally is μeff= 5.50 μB/mol Mn2+/3+, slightly lower than the theoretical one for spin only (5.83 μB).
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Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Arciniegas Jaimes, Diana Marcela; Fuertes, Valeria Cintia; Blanco, Marìa Cecilia; Tirao, German Alfredo; Limandri, Silvina Paola; et al.; Canted ferrimagnetism in the distorted double perovskite La3Mn2NbO9; Elsevier Science SA; Journal of Alloys and Compounds; 854; 157018; 2-2021; 1-11
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