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Updated: Dec 18, 2025

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Synthesis and Growth of Fresnoite (Ba2TiSi2O8) from a TiO2 Flux and Its Relation to the System BaTiO3-SiO2
1Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
Abstract:
Crystals of Ba2TiSi2O8 (synthetic fresnoite) up to 5 mm in longest dimension have been grown by slow cooling of a TiO2-rich liquid of initial composition 1BaO:1TiO2:1SiO2. The synthetic crystals are essentially identical to their mineral equivalent in morphology, cleavage, optical properties and unit cell dimensions. X-ray powder diffraction data previously reported for the compound BaTiSiO5 ("barium sphene") is that of Ba2TiSi2O8. Apparently the compound BaTiSiO5 has never been synthesized and the system BaTiO3-SiO2 is not binary.
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