Electronic transport properties of amorphous FeSc3 produced by mechanical milling

Victor Antonio Peña Rodriguez, E. C. Passamani, E. Baggio-Saitovich, S. L. Bud'ko, M. El Massalami, M. Gafhari, M. A. Continentino

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

The electrical resistivity (ρ) of amorphous FeSc3 prepared by mechanical milling has been measured from 4.2 K to 300 K. The following features were observed: ρ has minimum at about 8.7 K and its behavior at low temperatures (below 50 K) is typical for semiconductor materials. Moreover the ρ values show an anomalous increase when the temperature is reduced from 250 K to 50 K. Such increase of ρ has been observed in many amorphous materials and it is related to disordered structure. AC susceptibility measurements show that the analyzed sample is inhomogenous. In this work, we used the diffraction or elastic scattering model of the electronic transport proposed by Faber-Ziman in order to explain the linear temperature dependence of resistivity between 50 K and 250 K. Finally, Mössbauer spectroscopy has been performed on the milled powder samples.

Idioma originalInglés
Páginas (desde-hasta)837-840
Número de páginas4
PublicaciónMaterials Science Forum
Volumen225-227
N.ºPART 2
EstadoPublicada - 1996
Publicado de forma externa

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