“Study the Microwave Absorption Characteristics of U-Type Barium Hexaferrites Prepared Using Chemical Method ”. Journal of the College of Basic Education 16, no. 65 (December 16, 2022): 79 – 90. Accessed May 10, 2025. https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/7636.