Raman Scattering Study of Ca Modified Lead Titanate
نویسندگان
چکیده
منابع مشابه
Modeling of scattering and depolarizing electro-optic devices. I. Characterization of lanthanum-modified lead zirconate titanate.
We describe a new method of modeling electro-optic (EO) devices, such as lanthanum-modified lead zirconate titanate polarization modulators, that resolves two deficiencies of current methods: (i) the inclusion of depolarization effects resulting from scattering and (ii) saturation of the EO response at strong electric-field strengths. Our approach to modeling depolarization is based on describi...
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چکیده ندارد.
15 صفحه اولRaman scattering of ferroelectric lead lanthanum titanate thin films grown on fused quartz by metalorganic chemical vapor deposition
Highly textured lead lanthanum titanate (Pb1−xLax)TiO3 (PLT) thin films have been grown on fused quartz substrates by metalorganic chemical deposition (MOCVD). A series of PLT with different x between 0 and 0.32 were prepared and studied by Raman scattering. Raman spectra, measured at 300 K and 80 K, showed the features from the PLT film and quartz substrate. By using a “difference Raman” techn...
متن کاملBirefringence of lead titanate (PbTiO3)
Since lead titanate was ®rst grown in single-crystal form in the 1930s, several independent reports of its linear birefringence have been published. Whilst there is overall qualitative agreement on its behaviour with temperature, the absolute values show some degree of variation. At 298 K they range from ÿ0.009 to ÿ0.013, a relative spread of 40%, whilst at 673 K the discrepancy is even greater...
متن کاملRaman Study of Oxygen Reduced and Re-Oxidized Strontium Titanate
We report Raman study of oxygen-reduced single crystal strontium titanate. Oxygen reduction leads to the appearance of the forbidden first order Raman peaks, as well as new spectral features attributed to the local vibrational modes associated with oxygen vacancies. This assignment is supported by ab initio calculations of phonon modes in SrTiO3 with introduced oxygen vacancies. Raman studies o...
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ژورنال
عنوان ژورنال: Ferroelectrics
سال: 2007
ISSN: 0015-0193,1563-5112
DOI: 10.1080/00150190701515931