Continuation Sheet ) Continuation for Block 13 ARO Report
نویسندگان
چکیده
Thermally-induced loss of piezoelectricity in ferroelectric Na0.5Bi0.5TiO3–BaTiO3 Report Title The loss of piezoelectricity in ferroelectric sodium bismuth titanate (NBT) in solid solution with barium titanate ((1? x)NBT?xBT) is studied by means of thermal depoling and Raman spectroscopy. In the range 0?x?13%, the highest thermal stability of the piezoelectric coefficients is found in x=13%, for which a longitudinal piezoelectric coefficient of 118 pC/N was nearly temperature-independent up to a maximum temperature of 165 °C. The composition nearest the morphotropic phase boundary, x=6%, exhibited the lowest thermal depoling temperature of 107 °C. Depoling of this composition is suggested to arise from a second order phase transition evidenced in the temperature-dependent Raman spectra. Thermally-induced loss of piezoelectricity in ferroelectric Na0.5Bi0.5TiO3–BaTiO3 Approved for public release; distribution is unlimited. 54169.38-MS-PCS REPORT DOCUMENTATION PAGE (SF298) (Continuation Sheet) Continuation for Block 13
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