Journal
JOURNAL OF MAGNETICS
Volume 21, Issue 3, Pages 315-321Publisher
KOREAN MAGNETICS SOC
DOI: 10.4283/JMAG.2016.21.3.315
Keywords
strontium hexaferrite; substitution saturation magnetization; zinc; antimony; magnetic properties
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M-Zn (M = Sb, V, Nb) substituted M-type strontium hexaferrites were prepared by a ceramic method. The phase composition, morphology and magnetic properties were studied by x-ray diffractometry, scanning electron microscopy and vibrating sample magnetometry. Saturation magnetization increases with a substitution up to 75.0 emu/g (2.5 A) higher compared to unsubstituted hexaferrite) and then decreases with a further substitution. A coercive field of substituted hexaferrite powders with highest saturation magnetization is more than 3 kOe. Substituted strontium hexaferrite powders prepared in this work are a rare example of high Ms compositions without doping rare-earth elements and would be a promising candidate for a permanent magnet application.
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