Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li0.5Fe2.5O4

Citation
Hm. Widatallah et al., Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li0.5Fe2.5O4, SOL ST COMM, 120(4), 2001, pp. 171-175
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
0038-1098 → ACNP
Volume
120
Issue
4
Year of publication
2001
Pages
171 - 175
Database
ISI
SICI code
0038-1098(2001)120:4<171:SSAMCO>2.0.ZU;2-#
Abstract
Spinel-related magnesium-doped Li0.5Fe2.5O4 has been synthesised by heating magnesium-substituted corundum-related alpha -Fe2O3 with Li2CO3 at 600 deg reesC which is ca. 600 degreesC lower than the temperature normally used to prepare metal-doped Li0.5Fe2.5O4 by conventional sintering methods. Rietve ld structure refinement of the X-ray powder diffraction data shows that the Mg2+ ions substitute for Fe3+ ions on the tetrahedral sites whilst the Li ions are located on the octahedral sites. The Fe-57 Mossbauer spectrum and magnetic measurements are consistent with this structural model. (C) 2001 Elsevier Science Ltd. All rights reserved.