Optimization of structural, morphology, site occupancy, and hysteresis performance metrics of Co-Cd Co-doped SrM hexaferrite for recording applications
Abstract
In the current work, a sol-gel combustion technique has been adopted to synthesize Co-Cd substituted SrM hexaferrite. The X-ray patterns of incorporated samples showed the magnetoplumbite structure, accompanied by some secondary phases of CoFe2O4. The morphological studies of the z = 0.6, 0.8, and 1.0 revealed the densification of grains, which enhances the inter-particle contact. The energy dispersive spectra exhibited peaks of cadmium, cobalt, strontium, oxygen, and ferrite, signifying the formation of Co-Cd substituted SrM hexaferrite. Mössbauer spectra revealed that the substituent tends to occupy spin-down sites 4f1 and 4f2 of the crystal lattice from z = 0.2 to 0.6, elucidating a significant increase in saturation magnetization. A large value of coercivity 4273.50 Oe, 3612.63 Oe, and 4551.28 Oe was observed for z = 0.4, 0.6, and 1.0 samples, respectively, with a squareness ratio greater than 0.5, indicating the existence of single-domain particles. The high values of saturation and remanent magnetization with tunable coercivity and squareness ratio make the prepared sample suitable for recording applications. (Figure presented.)
Publication Title
Journal of Sol Gel Science and Technology
Recommended Citation
Thakur, M., Singh, C., Martinson, K., Buryanenko, I., Semenov, V., Mishra, S., Azim, M., Abdel, l., Hussein, S., Srivastava, A., & Popkov, V. (2026). Optimization of structural, morphology, site occupancy, and hysteresis performance metrics of Co-Cd Co-doped SrM hexaferrite for recording applications. Journal of Sol Gel Science and Technology, 118 (1) https://doi.org/10.1007/s10971-026-07149-5
