Citation: Zhang, Jiliang; Lee, Jey-Jau; Yang, Tonghan; He, Wei; Kang, Yong-Mook; Bobev, Svilen (2020). Tunable Magnetic Exchange between Rare-Earth Metal 5d and Iron 3d States: A Case Study of the Multiple Magnetic Transitions in Gd6FeBi2 and the Solid Solutions Dy6--xGdxFeBi2 (1 ≤ x ≤ 5) with Curie Temperatures in the Range 120--350 K. Chemistry of Materials, , pp. -.