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JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
Volume 46, Issue 11, Pages 7314-7316Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.46.7314
Keywords
lithium ferrite; microwave-induced combustion synthesis; saturation magnetization; complex permeability; loss tangent
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Li0.5Fe2.5-xCrxO4 (0 <= x <= 1.0) powders with small and uniformly sized particles were successfully synthesized by microwave-induced combustion. The results revealed that the lattice parameter decreases nonlinearly with increasing of Cr concentration in the Li0.5Fe2.5-xCrxO4 specimens. Moreover, the magnetic properties of Cr-substituted lithium ferrite were also strongly affected by Cr concentration. Saturation magnetization, remanent magnetization, and coercive force decrease monotonously with increasing Cr concentration. As for the sintered Li0.5Fe2.5-xCrxO4 specimens, substituting an appropriate amount of Cr for Fe in the Li0.5Fe2.5-xCrxO4 specimens markedly improved complex permeability and loss tangent.
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