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Spontaneous relaxor to normal ferroelectric transitions have been reported in a number of lead based relaxor systems,but not in all relaxors. It is unclear about its necessary condition, and about its origin. We systematically studied two representative relaxor systems, PZT based La doped PbZr0.65Ti0.35O3 and BT based system xLa doped Ba0.75Ca0.25TiO3, by dielectric, ferroelectric and XRD measurements...
Crystalline solutions of 0.57(B1-xLax)FeO3-0.43PbTiO3 (BLF-PT) for x=0, 0.1, 0.2 and 0.3 have been fabricated by traditional solid state reaction method. X-ray diffraction (XRD) analysis reveals that the tetragonal to rhombohedral phase transformation of BLF-PT occurs with the increase of La content. The dielectric and ferroelectric properties of BLF-PT were investigated at room temperature for different...
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