INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Occupancy of 4d states in T (T: Mo, Nb) from NEXAFS L3,2 spectra of Nd-Fe-B-T alloys
Autor/es:
BILOVOL, V.; SACCONE, F. D.
Revista:
JOURNAL OF APPLIED SPECTROSCOPY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 81 p. 499 - 502
ISSN:
0021-9037
Resumen:
Samples of NdyFe(86-y-x)B14Tx (T: Mo, Nb; x=2,4; y=7,8 at.%) alloys were studied by X-ray absorption spectroscopy technique. The NEXAFS spectra of NdFeB ribbons produced by the melt spinning technique (as quenched, AQ) and subsequently annealed (TT) were taken at Mo and Nb L3,2-edge. We calculated the variations of occupancy of the 4d states of both additives and found an opposite trends in filling of 4d states. The most significant changes were observed in T2Nd7 system, for which the electron occupancy in 4d levels was modified in a surpassing quantity of 1 electron/atom (after thermal treatment). The relationship between these results and magnetic features of the alloys are evidenced.
