Voltar
Artigo Revisado por pares
BIBTEX RIS

Correlated electronic and magnetic peculiarities of La 2 NiO 4+? : Charge and spin ordering

1999; EDP Sciences; Volume: 5; Issue: 2 Linguagem: Inglês

10.1051/epjap

ISSN

1286-0050

Autores

P. Odier, Nathalie Poirot, P. Šimon, D. Desousa Meneses,

Tópico(s)

Electronic and Structural Properties of Oxides

Resumo

Electronic and magnetic peculiarities of La2NiO4+δ are discussed emphasizing charge and spin ordering phenomena. Macroscopic measurements of conductivity (dc, optical) and magnetic susceptibility on samples of well-known oxygen stoichiometries agree to show anomalies where this peculiar ordering is expected. Our data account for the heterogeneous nature of the magnetism. The susceptibility which is quasi temperature independent in a large T range is modeled by a system of spins cluster.

Referência(s)