Experimental evidence of Cr magnetic moments at low temperature in Cr2A(A=Al, Ge)C.
J Phys Condens Matter
; 26(17): 176002, 2014 Apr 30.
Article
em En
| MEDLINE
| ID: mdl-24721758
ABSTRACT
From x-ray magnetic circular dichroism experiments performed at low temperature on Cr2AlC and Cr2GeC thin films, it is evidenced that Cr atoms carry a net magnetic moment in these ternary phases. It is shown that the Cr magnetization of the Al-based compound nearly vanished at 100 K in agreement with what has been recently observed on bulk. X-ray linear dichroism measurements performed at various angles of incidence and temperatures clearly demonstrate the existence of a charge ordering along the c axis of the structure of Cr2AlC. All these experimental observations support, in part, theoretical calculations claiming that Cr dd correlations have to be considered to correctly describe the structure and properties of these Cr-based ternary phases.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carbono
/
Ligas de Cromo
/
Alumínio
/
Campos Magnéticos
/
Germânio
/
Modelos Químicos
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article