Effect of Li and Mg substitution on the crystal structure and magnetism of the REGa2 (RE =Ce and Eu) and EuGa4 compounds.

Highlights: [•] The structure and properties of Ce x Mg y Ga2−x−y, Eu(Li/Mg) x Ga2−x and Eu(Li/Mg) x Ga4−x. [•] EuMg x Ga2−x (0⩽ x ⩽0.73) and Ce0.82Mg0.50Ga1.68 are new compounds. [•] The substitution of Li/Mg affects the magnetic properties of the compounds. [ABSTRACT FROM AUTHOR]