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Erschienen in:
15.12.2015
Influence of Nd3+ substitution on physical, electrical and dielectric properties of Ba2Zn2Fe12O22 hexagonal ferrites prepared by sol–gel auto combustion method
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 4/2016
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Abstract
A series of single phase Y-type hexagonal ferrites having chemical formula Ba2Zn2Nd
x
Fe12−x
O22 (x = 0–0.1) were prepared by sol–gel technique. The X-ray diffraction patterns showed that the ferrites belong to the family of single phase Y-type hexagonal ferrites. The grain size estimated from electron microscope images confirms the crystalline nature of the investigated samples and well defined hexagonal platelet-like shape is a most suitable shape for applications. The increase in resistivity is attributed to the removal of low energy pathway due to doping cation placement at octahedral site. The enhancement in resistivity makes these materials suitable for multi-layer chip inductors. The dielectric constant decreases due to lowering of dipole moment with substitution. The frequency dependent ac conductivity increases with increase in frequency and decrease with Nd doping. The conductivity mechanism so determined was hopping mechanism.