Paramagnetic behaviour of Ce1-xGdxCo2 compounds

• Tipo: Artigo em Revista Científica Internacional
• Data: 1995

Autores

Teresa Seixas (Autor) FCUP; Machado da Silva, JM (Autor) Outra; Oliveira, JMB (Autor) Outra

Revista

Título: Journal of Magnetism and Magnetic Materials

Vol. 140-144

Páginas: 829-830

ISSN: 0304-8853

Editora: Elsevier

Indexação

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-007-6ND

DOI: 10.1016/0304-8853(94)00781-0

Abstract (EN): Magnetic susceptibility studies have been made on the cubic C15 (MgCu2-type) Laves phases Ce1-xGdxCo2 in the temperature range 300-900 K. Well above Tc, the inverse susceptibility follows a linear temperature dependence, as predicted by a phenomenological mean-field model describing a three-component ferrimagnetic alloy with localized magnetic moments. The values of the Curie constant determined in this way decrease regularly with x from x = 1 down to x = 0.4. Around x = 0.3, the Curie constant exhibits a small local maximum. This suggests the onset of a spin-fluctuation regime at low x, possibly due to the reduction of the internal field with the increase of cerium content. © 1995.

Idioma: Inglês

Tipo (Avaliação Docente): Científica