Dielectric and optical behaviors for pure potassium sulfate and doped with copper and iron. Iraqi Journal of Science, [S. l.], v. 57, n. 3A, p. 1699–1706, 2022. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7032.. Acesso em: 18 may. 2024.