Magnetocaloric effect of Co62Nb6Zr2B30 amorphous alloys obtained by mechanical alloying or rapid quenching

Magnetocaloric effect of Co62Nb6Zr2B30 amorphous alloys obtained by mechanical alloying or rapid quenching

Amorphous samples of nominal composition Co62Nb6Zr2B30 have been prepared using mechanical alloying (MA) and rapid quenching (RQ) techniques. Differences appear in Curie temperature and the phases developed after crystallization. Refrigerant capacity is enhanced 20% in the MA-sample with respect to...

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Veröffentlicht in:Journal of applied physics 2014-05, Vol.115 (17)
Hauptverfasser: Moreno, L. M., Blázquez, J. S., Ipus, J. J., Borrego, J. M., Franco, V., Conde, A.
Format: Artikel
Sprache:eng
Schlagworte:
Alloying effects
Amorphous alloys
Crystallization
Curie temperature
Demagnetization
Dependence
Heat treating
Magnetism
Mechanical alloying
Metallic glasses
Rapid quenching (metallurgy)
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Zusammenfassung:Amorphous samples of nominal composition Co62Nb6Zr2B30 have been prepared using mechanical alloying (MA) and rapid quenching (RQ) techniques. Differences appear in Curie temperature and the phases developed after crystallization. Refrigerant capacity is enhanced 20% in the MA-sample with respect to that of RQ-sample. Neglecting the demagnetizing factor of powder samples significantly affects the exponent n characterizing the field dependence of the maximum magnetic entropy change.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4857595