Abstract
Li 0.5Fe 2.5− x Al x O 4 (0 ≦ x ≦ 1.0) powders with small and uniformly sized particles were successfully synthesized by microwave-induced combustion, using lithium nitrate, iron nitrate, aluminium nitrate, and carbohydrazide as the starting materials. The process takes only a few minutes to obtain as-received Al-substituted lithium ferrite powders. The resultant powders annealed at 650 °C for 2 h and were investigated by thermogravimeter/differential thermal analyzer (TG/DTA), X-ray diffractometer (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and thermomagnetic analysis (TMA). The results revealed that the lattice constant, powder density, and crystallite size decrease linearly with the increasing of Al content in Li 0.5Fe 2.5− x Al x O 4 samples. Moreover, the magnetic properties of Al-substituted lithium ferrite also strongly affected by Al content. The saturation magnetization, remanent magnetization, Curie temperature, and coercive force decrease significantly with the increasing of Al content.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
