Directionally Solidified Cobalt-Doped MgO-MgAl 2 O 4 Eutectic Composites for Selective Emitters. - Merino, Rosa I.; Oliete, Patricia B.; Moshtaghioun, Bibi Malmal; Sola, Daniel; Peña, José I. (Applied Sciences (2076-3417), 2022)