NONSTOICHIOMETRIC LIZNTI FERRITES FOR MICROWAVE APPLICATIONS

被引：9
作者：
IGLESIAS, A [1 ]
GUERASIMENKO, IV [1 ]
DIAZ, S [1 ]
ARIAS, AG [1 ]
机构：
[1] UNIV HAVANA,DEPT FIS APLICADA,HAVANA,CUBA
来源：
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1993年 / 140卷 / 01期
关键词：
D O I：
10.1002/pssa.2211400121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of iron defect in the chemical composition, to make up for the contamination by the steel mins in spinel ferrites of nominal composition Li-0.5(1-x+y)ZnxTiyFe[2.5-0.5(x+3y-z-k])MnzO4, where k accounts for the iron defect, is studied through the measurement of M(s) and the curves of ferromagnetic resonance. Samples are sintered in air and O-2. The ferromagnetic linewidth Delta H decreases in both cases with increasing k, without modifying M(s) noticeably, for k up to 0.05. The asymmetry of the resonance peak implies an anisotropy compensation point for k near 0.05 suggesting that, besides the Fe2+ compensation taking place at this value, some phase segregation occurs when k > 0.04, changing the composition of the spinel matrix.
引用
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页码：221 / 226
页数：6
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