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Dielectric and Mossbauer Studies of B-Cation Order-Disorder Effect on the Properties of Pb(Fe<sub>1/2</sub>Ta<sub>1/2</sub>)O<sub>3</sub>Relaxor Ferroelectric
17
Citations
10
References
2006
Year
Magnetic PropertiesEngineeringFunctional CeramicMagnetismFerroelectric ApplicationQuantum MaterialsSintering TemperatureMaterials ScienceMossbauer StudiesPhysicsMicrowave CeramicB-cation Order-disorder EffectLi2co3 AdditionFerromagnetismMean TemperatureNatural SciencesApplied PhysicsCondensed Matter PhysicsFerroelectric Materials
In Pb(Fe1/2Ta1/2)O3 ceramics with Li2CO3 addition the mean temperature of the antiferromagnetic phase transition (Neel temperature), determined from the Mossbauer spectra studies was found to depend on the sintering temperature. Dielectric studies show that lowering of Neel temperature is accompanied by increasing of the permittivity maximum temperature and diminishing of the permittivity frequency dispersion. The obtained results are explained by changes of the degree of Fe3+ and Ta5+ compositional ordering.
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