Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9803757 | Journal of Alloys and Compounds | 2005 | 5 Pages |
Abstract
Li0.5Fe2.5âxMxO4 (M = Al, Cr, Mn) powders with small and uniformly sized particles were successfully synthesized by microwave-induced combustion, using lithium nitrate, ferric nitrate, aluminum nitrate, chromium nitrate, manganese nitrate, and carbohydrazide as the starting materials. The process takes only a few minutes to obtain as-received Al, Cr, and Mn-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 saturation magnetization and Curie temperature of Li0.5Fe2.5âxMxO4 were strongly affected by different metal ions substitution.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yen-Pei Fu, Shen Tsao, Chen-Ti Hu, Yeong-Der Yao,