X-ray photoelectron diffraction study of ultrathin PbTiO3 films
نویسندگان
چکیده
منابع مشابه
Ferroelectricity and tetragonality in ultrathin PbTiO3 films.
The evolution of tetragonality with thickness has been probed in epitaxial c-axis oriented PbTiO3 films with thicknesses ranging from 500 down to 24 A. High resolution x ray pointed out a systematic decrease of the c-axis lattice parameter with decreasing film thickness below 200 A. Using a first-principles model Hamiltonian approach, the decrease in tetragonality is related to a reduction of t...
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Using in situ high-resolution synchrotron x-ray scattering, the Curie temperature TC has been determined for ultrathin c-axis epitaxial PbTiO3 films on conducting substrates (SrRuO3 on SrTiO3), with surfaces exposed to a controlled vapor environment. The suppression of TC was relatively small, even for the thinnest film (1.2 nm). We observe that 180 degrees stripe domains do not form, indicatin...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2006
ISSN: 1434-6028,1434-6036
DOI: 10.1140/epjb/e2006-00050-0