Autor(es):
Coelho, Adelino de Aguiar, 1960-
Data: 2017
Identificador Persistente: https://hdl.handle.net/20.500.12733/1663976
Origem: Oasisbr
Assunto(s): Raios X - Difração; Síncrotron; Terras raras; X-rays - Diffraction; Synchrotron; Rare earths; X-ray powder diffraction; Compounds; Artigo original; Raios X - Difração; Raios X - Difração; Síncrotron; Síncrotron; Terras raras; Terras raras; X-rays - Diffraction; X-rays - Diffraction; Synchrotron; Synchrotron; Rare earths; Rare earths; X-ray powder diffraction; X-ray powder diffraction; Compounds; Compounds; Artigo original; Artigo original
Descrição
Agradecimentos: The authors thank Dr. Cristiane B. Rodella, Henrique Canova, Adalberto Fontoura, and Douglas Araujo for the previous and present efforts at the XRD1 beamline and Ana T. G. Mendes for arc-melting the samples. The authors also thank FAPESP (project number 2012/03480-0), CNPq, and LNLS
Abstract: Representative compounds of the new family of magnetic materials Gd5-xNdxSi4 were analyzed by X-ray diffraction at the XRD1 beamline at Laboratorio Nacional de Luz Sincrotron. To reduce X-ray absorption, thin layers of the powder samples were mounted outside the capillaries and measured in Debye-Scherrer geometry as usual. The XRD analyses and the magnetometry results indicate that the behavior of the magnetic transition temperature as a function of Nd content may be directly related to the average of the four smallest interatomic distances between different rare earth sites of the majority phase of each compound. The quality and consistency of the results show that the XRD1 beamline is able to perform satisfactory XRD experiments on high-absorption materials even off the best conditions
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
Aberto
