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RESEARCH PRODUCT
Microstructure, calorimetric and dielectric investigation of hafnium doped barium titanate ceramics
Anna KalvaneAndrzej MolakBarbara Garbarz-glosW. Bąksubject
Phase transitionMaterials scienceEnthalpyAnalytical chemistryMineralogychemistry.chemical_elementDielectricMicrostructureFerroelectricityHafniumchemistry.chemical_compoundchemistryBarium titanateGeneral Materials ScienceInstrumentationSolid solutiondescription
Ferroelectric properties of BaTi1− x Hf x O3 ceramics with Hf content x = 0, 0.001, and 0.025 were examined. It was found that the substitution of Hf4+ for Ti4+ in BaTiO3 resulted in shifting the two low-temperature transitions (T 1, T 2) of the investigated samples to higher temperatures and decreasing the tetragonal-cubic phase transition temperature (T c). This is a well-known pinching effect. Thermal parameters of the transitions, such as the enthalpy ΔH and the entropy ΔS, were also estimated and discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-09-01 | Phase Transitions |