Vibrational, Optical Band Gap, Urbach Energy, and Thermal Activation Analysis of TiO2/CaTiO3 Perovskite. IJMST [Internet]. 2026 Jan. 21 [cited 2026 Jul. 9];2(1):39-50. Available from: https://journal.abhinaya.co.id/index.php/ijmst/article/view/330