Chemical tuning of magnetic ordering and cryogenic magnetocaloric response in zircon-type Gd1-xErxVO4
This study demonstrates that partial substitution of Gd³⁺ with smaller Er³⁺ ions in zircon-type Gd₁₋ₓErₓVO₄ systematically tunes lattice parameters and magnetic interactions, effectively optimizing the low-temperature magnetocaloric performance for cryogenic refrigeration, with the Gd₀.₉Er₀.₁VO₄ composition achieving a maximum magnetic entropy change of 45.1 J kg⁻¹ K⁻¹ under a 7 T field.