Dielectric, impedance, AC conductivity and low-temperature magnetic studies of Ce and Sm co-substituted nanocrystalline cobalt ferrite

•Conductivity in CoCexSmyFe2-x-yO4 due to Polaron hopping between cations.•RE (Ce and Sm) substitution in CoFe2O4 led to decrease in Impedance.•Conduction process is mainly due to grains.•Magnetic particles possess multi-domain with cubic anisotropy at 20 K.•Shows ferromagnetism at low and Super par...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2019-12, Vol.492, p.165666, Article 165666
Hauptverfasser:	Ahmad, Syed Ismail, Rauf, Abdul, Mohammed, Tasneem, Bahafi, Amal, Ravi Kumar, D., Suresh, Madireddy Buchi
Format:	Artikel
Sprache:	eng
Schlagworte:	AC conductivity Cobalt ferrite Cobalt ferrites Coercivity Conductivity Dielectric constant Dielectric properties Ferromagnetism Frequency ranges Impedance spectroscopy Low temperature Magnetic measurement Magnetic properties Morphology Paramagnetism Polarization Rare earth elements Sol-gel processes Space charge Substitutes Temperature Temperature dependence ZFC/FC
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