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The average crystal structures of the ferroelectric and the intermediate paraelectric phases of SBN53 were refined at various temperatures up to 200 °C from single crystal X‐ray diffraction data. Shifts of the atoms reduce the microscopic spontaneous electric polarization which, however, does not entirely vanish on heating at the ferroelectric (FE) phase transition near 95 °C. Most atoms show an unusual...
The crystallite size, microstrain, stacking disorder and moganite content of flint and other chert raw materials were studied by X‐ray powder diffraction profile analysis. The broadening of the X‐ray reflections of all microfibrous quartz varieties is due to both anisotropic small crystallite size and anisotropic microstrain. The microstructure varies for samples of different origin. The moganite...
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