IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control · 2009 · 13 citations · 15 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCrystal StructureSolid State PhysicsFerroelectric CeramicsFerroelectric MaterialsPiezoelectric CeramicsPiezoelectric MaterialsBarium TitanateHigh-temperature CeramicsHigh-temperature PerformanceHigh-temperature Piezoelectric CeramicsPiezoelectric CoefficientsPiezoelectric CrystalsPiezoelectric EffectPiezoelectric Single Crystals
(1-x)(Bi(0.9)La(0.1))FeO(3-x)PbTiO(3) (BLF-PT) crystalline solutions for x = 0.35, 0.37, 0.4, 0.43 and 0.45 have been prepared by the solid-state reaction method. The X-ray diffraction analysis shows that BLF-PT has a single perovskite phase with mixed tetragonal and rhombohedral phases between x = 0.4 and 0.43. The Curie temperature of BLF-PT for x = 0.4 attains 460 degrees C, which is about 80 degrees C higher than that of hard Pb(Zr,Ti)O(3) ceramics. The remnant polarization and piezoelectric constant of BLF-PT for x = 0.4 reach 38 microC/cm(2) and 112 pC/N, respectively. The planar coupling factor k(p) of BLF-PT for x = 0.4 remains stable at temperature increases of up to 360 degrees C. The impedance spectroscopy study reveals that the high temperature conduction of BLF-PT may be attributed to the motion of oxygen vacancies within the material. Our results indicate that BLF-PT is a promising candidate for high temperature applications.
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Crystal and domain structure of the BiFeO3–PbTiO3 solid solution
D. Woodward, Ian M. Reaney, Richard E. Eitel et al. · Journal of Applied Physics · 2003 · 272 citations