Enhanced structural and magnetic properties of Al–Cr-substituted SrFe12O19 hexaferrite system. - Subrahmanya Sarma, K.; Rambabu, Ch.; Vishnu Priya, G.; Raju, M. K.; Parajuli, D.; Khalid Mujasam, Batoo; Ritesh, Verma; Rajesh, Kumar; Murali, N.; Lakshminarayana, P. V. (Applied Physics A: Materials Science & Processing, 2022)