Abstract
The data in this article is the supplementary data of the research article entitled "Comparable magnetocaloric properties of melt-extracted Gd(36)Tb(20)Co(20)Al(24) metallic glass microwires" (Yin et al., 2020). The data shows the circular cross section of Gd(36)Tb(20)Co(20)Al(24) metallic glass microwires with a diameter of ∼55 μm. The data also shows that the chemical compositions of microwires are basically uniform on macro-scale and micro-scale.