Correction: Slimani et al. Impacts of Sol–Gel Auto-Combustion and Ultrasonication Approaches on Structural, Magnetic, and Optical Properties of Sm-Tm Co-Substituted Sr 0.5 Ba 0.5 Fe 12 O 19 Nanohexaferrites: Comparative Study. Nanomaterials 2020, 10 , 272 - Slimani, Yassine; Almessiere, Munirah Abdullah; Güner, Sadik; Kurtan, Umran; Baykal, Abdulhadi (Nanomaterials (2079-4991), 2026)