INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Dynamic coercivity of Mo-doped FINEMETs
Autor/es:
CHAKRABORTY SRIMOY; MANDAL KALYAN; SAKAR DEBASHIS; CREMASCHI VICTORIA J; SILVEYRA JOSEFINA M
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2011 vol. 406 p. 1915 - 1918
ISSN:
0921-4526
Resumen:
The structure and the dc magnetic behavior of FINEMET-type alloys doped with molybdenum have been recently reported. Most commercial applications of these materials are, however, not at dc but at high magnetizing frequencies. Therefore, we report a study of the frequency dependence of coercivity, Hc(f), in amorphous and nanocrystalline ribbons of composition Fe73.5Si13.5Nb3−xMoxB9Cu1 (x=0, 1.5 and 3) in the frequency range from 0.5 to 1.3 kHz. The nature of Hc(f) measurements revealed the influence of eddy currents in the magnetization of samples. The frequency dependence of coercivity did not vary with the molybdenum content in the amorphous samples. All the alloys exhibited a systematic improvement in the coercivity after nanocrystallization and it was found that this improvement was better as more Nb was replaced by Mo.
