Achieving higher magnetic entropy change peak at lower temperature by minor Ti substitution for Zr in the Fe88Zr8B4 metallic glass

Abstract

Fe-Zr-B-based amorphous alloys (AAs) show good magnetocaloric effect (MCE) around the ambient temperature, and their maximum magnetic entropy change ([Formula: see text] generally increases with their Curie temperature ([Formula: see text], which means the poor magnetocaloric properties near the cold end of the air conditioner. In this work, by adding 2% (at.%) Ti to replace the Zr element in a [Formula: see text] AA, we successfully fabricated the [Formula: see text] amorphous ribbon. The [Formula: see text] amorphous ribbon exhibits a slightly enhanced glass formability, improved [Formula: see text] and decreased [Formula: see text] when compared to the [Formula: see text] AA. The results are helpful for developing better MCE of the Fe-Zr-B-based metallic glasses working near the cold end of a domestic magnetic air conditioner.