Artículo
Small-angle x-ray scattering study of nanocrystalline FeyCu1−y alloys produced by ball milling
Fernández van Raap, Marcela Beatriz
; Socolovsky, Leandro Martín
; Sánchez, Francisco Homero
; Torriani, L.
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
01/2002
Editorial:
IOP Publishing
Revista:
Journal of Physics: Condensed Matter
ISSN:
0953-8984
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Small-angle x-ray scattering measurements on ball-milled FeyCu1−y giantmagnetoresistivealloys (0.141 y 0.45) have been performed usingsynchrotron radiation. For samples with different nominal compositions,prepared under exactly the same conditions, the scattered intensity recordedas a function of the wavevector varied systematically. For this reason, thestrong scattering signal was attributed mainly to composition fluctuations inthe crystalline grains. The system was treated as a two-phase model consistingof Fe-rich regions in a homogeneous Cu matrix, with composition-dependentrelative volume fractions. Real-space analysis of the scattering was performedin terms of a volumetric distribution of spherical particles. Results indicatethat the main contribution corresponds to 2 nm scattering objects of welldefineddensity contrast. The invariantQwas calculated to assess the variationsin electron-density contrast as a function of the Fe content in the samples.Calculations based on these results allowed the determination of 0.35 at.% ironconcentration in the iron-rich phase for all the nominal compositions studied.
Palabras clave:
SAXS
,
Nanocompositos
,
Aleaciones FeCu
,
Ball milling
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Fernández van Raap, Marcela Beatriz; Socolovsky, Leandro Martín; Sánchez, Francisco Homero; Torriani, L.; Small-angle x-ray scattering study of nanocrystalline FeyCu1−y alloys produced by ball milling; IOP Publishing; Journal of Physics: Condensed Matter; 14; 1-2002; 857-864
Compartir