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- W2070570332 abstract "Abstract A new perovskite solid solution system of (1− x )LaCrO 3 – x BiCrO 3 has been prepared by conventional solid-state reaction and sintering processes at 1200°C in a sealed Pt tube or a Bi 2 O 3 -rich environment. A clean orthorhombic phase of LaCrO 3 -type structure is established at room temperature for compositions with 0⩽ x ⩽0.35. The relative density, lattice parameters, sintering mechanism, microstructure and ferroelectricity of the compounds are investigated. The substitution of Bi 2 O 3 for La 2 O 3 is found to decrease the unit cell volume and increase the grain size of the ceramics. The relative density of the ceramics sintered at 1200°C is significantly improved from 40% for LaCrO 3 up to about 90% for La 0.65 Bi 0.35 CrO 3 through a liquid phase sintering mechanism. The ferroelectricity is revealed in La 1− x Bi x CrO 3 with 0.1⩽ x ⩽0.35 by dielectric hysteresis loops displayed at 77 K. The remnant polarization is found to increase with increasing Bi 3+ content. The origin of the ferroelectricity is attributed to the structural distortion induced by the stereochemically active Bi 3+ ion on the A site." @default.
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- W2070570332 date "2004-04-01" @default.
- W2070570332 modified "2023-10-06" @default.
- W2070570332 title "A new ferroelectric solid solution system of LaCrO3–BiCrO3" @default.
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- W2070570332 doi "https://doi.org/10.1016/j.jssc.2003.11.035" @default.
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