EPJ Web of Conferences 40, 06009 (2013)
https://doi.org/10.1051/epjconf/20134006009

Phase constitution, magnetic ordering and microstructure of the LaFe_11.0Co_0.8Si_1.2 alloy

¹ Institute of Physics, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200   Częstochowa, Poland
² Institute of Materials Engineering, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland

Abstract

Microstructure and phase constitution of the LaFe_11.0Co_0.8Si_1.2 bulk and ribbon samples in as-cast state and after annealing, were studied. For both samples in as-cast state the dominant dendritic α-Fe phase was formed. Annealing of the samples resulted in homogenization of the microstructure and change of the phase constitution. The heat treatment resulted in development of almost single-phase of the NaZn₁₃-type structure identified as LaFe_11.0Co_0.8Si_1.2 with minor fraction of the α-Fe. The evolution of microstructure and phase constitution was verified by EDX analysis and Mössbauer spectroscopy.