Abstract
The magnetocaloric effect (MCE) of melt-spun Fe 64Mn 15− x Co x Si 10B 11 amorphous alloys with x = 0, 0.2, 0.5, 0.7, and 1.0 was evaluated with the aim of maximizing the magnetic entropy change close to the room temperature. The peak magnetic entropy change, Δ S M pk for Fe 64Mn 15Si 10B 11 at 309 K at H = 15 kOe was limited to 0.82 J/kg K. The magnetic properties and ensuing MCE were very sensitive to the Co content that it is conjectured that with a smaller amount of Co addition the Δ S M pk can be optimized while maintaining the Curie temperature near room temperature. It was also shown that the Fe 64Mn 15− x Co x Si 10B 11 amorphous alloys obeyed the master curve behavior as the magnetic entropy change curve collapsed on to a single universal curve.
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