INVESTIGADORES
BERCOFF Paula Gabriela
artículos
Título:
Cation distribution and magnetic properties of LiMnZn ferrites
Autor/es:
M. ARANA; V. GALVÁN; S. E. JACOBO; P. G. BERCOFF
Revista:
JOURNAL OF ALLOYS AND COMPOUNDS
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 568 p. 5 - 10
ISSN:
0925-8388
Resumen:
Spinel
compounds Li0.5x Zn0.6-x Mn0.4 Fe2+0.5x O4
(x=0.0; 0.1; 0.2; 0.4) were produced by the self-combustion sol-gel method. The obtained powders
were calcined at 1000ºC
for 2 hours in Ar atmosphere. The structural and microstructural
characteristics of the resulting samples were studied by magnetization
measurements and X-ray powder diffraction in combination with the Rietveld
method. Based on magnetization results, a cation distribution model is proposed
and is tested with Rietveld refinements. The observed increase in saturation
magnetization with Li content in the structure is explained by an unusual
distribution of Zn2+ ions in octahedral sites.