Spectroscopic, lattice dynamic, first-principles electronic and optical insights, and electrocatalytic performance of the Sr₂FeMoO₆ double perovskite for hydrogen evolution reaction

D. S. Luz, Raí F. Jucá, Francisco G. S. Oliveira, Luiz F. Lobato, J.M. Soares, Waldeci Paraguassu, Francisco F. de Sousa, A.J. Ramiro de Castro, J.A. Lima, Alexandre Magno Rodrigues Teixeira, Gilberto D. Saraiva