Energy-dispersive X-ray absorption spectroscopy at LNLS: investigation on strongly correlated metal oxides

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Cezar, Julio C. ; Souza-Neto, Narcizo M. ; Piamonteze, Cinthia ; Tamura, Edilson ; Garcia, Flavio ; Carvalho, Edson J. ; Neueschwander, Regis T. ; Ramos, Aline Y. ; Tolentino, Helio C. N. ; Caneiro, Alberto ; Massa, Nestor E. ; Jesus Martinez-Lope, Maria ; Antonio Alonso, Jose ; Itie, Jean-Paul

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SYNCHROTRON RADIATION; v. 17, p. 10-pg., 2010-01-01.

Resumo

An energy-dispersive X-ray absorption spectroscopy beamline mainly dedicated to X-ray magnetic circular dichroism (XMCD) and material science under extreme conditions has been implemented in a bending-magnet port at the Brazilian Synchrotron Light Laboratory. Here the beamline technical characteristics are described, including the most important aspects of the mechanics, optical elements and detection set-up. The beamline performance is then illustrated through two case studies on strongly correlated transition metal oxides: an XMCD insight into the modifications of the magnetic properties of Cr-doped manganites and the structural deformation in nickel perovskites under high applied pressure. (C) 2010 International Union of Crystallography Printed in Singapore - all rights reserved (AU)

• Processo FAPESP: 99/12330-6 - Espectroscopia de absorção de raios-X por fluorescência em sistemas diluídos: estudos em filmes finos magnéticos, dopagem em semicondutores e poluição ambiental
• Beneficiário: Helio Cesar Nogueira Tolentino
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários