ChemInform Abstract: Spectroscopic and Magnetic Properties of α-Li3Fe2(PO4)3: A Two-Sublattice Ferrimagnet

Autor:	Roger Olazcuaga, Aintzane Goñi, N. O. Moreno, Luis Lezama, G.E. Barberis, Léopold Fournès, Teofilo Rojo
Rok vydání:	2010
Předmět:	Condensed matter physics Chemistry Transition temperature General Medicine Ion Condensed Matter::Materials Science Coupling (physics) Nuclear magnetic resonance Ferromagnetism Ferrimagnetism Condensed Matter::Strongly Correlated Electrons Mossbauer spectra Magnetic interaction Hyperfine structure
Zdroj:	ChemInform. 31
ISSN:	1522-2667 0931-7597
DOI:	10.1002/chin.200019013
Popis:	Spectroscopic and magnetic studies on α-Li3Fe2(PO4)3 show an interesting behavior below the transition temperature (29 K). The compound orders antiferromagnetically, presenting a weak ferromagnetic moment, which diminishes with temperature. In the same region of temperatures, the Mossbauer spectra split in two sextets with slightly different hyperfine fields, and the ESR spectrum reduces its intensity and broadens. These results are interpreted as the competition between two sublattices of Fe(III) ions, corresponding to the presence of two independent Fe(III) crystallographic sites in the structure. The magnetic interaction in each sublattice is ferromagnetic, being coupled antiferromagnetically between them. The observed weak ferromagnetic component is the result of the ferrimagnetic character in the coupling between two Fe(III) sublattices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ff924d5b3804385ed01bb3460aa97c8d https://doi.org/10.1002/chin.200019013 Zobrazit plný text záznamu Plný text