SAPUTRA, Kormil et al.
Electronic Properties of Fe3-xCoxO4 (x = 0.25 and 0.375) Synthesized from Natural Iron Sand: Evaluation of Band Gap and Urbach Tail.
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika, [S.l.], v. 8, n. 2, p. 23-34, nov. 2025.
ISSN 2615-1219.
Available at: <https://jos.unsoed.ac.id/index.php/tf/article/view/17580>. Date accessed: 07 feb. 2026.
doi: https://doi.org/10.20884/1.jtf.2025.8.2.17580.