Multiwavelength anomalous X-ray diffraction for combined imaging of atomic displacement and strain

Shabalin, A.G.; Shpyrko, O.G.

doi:10.1107/S2053273321004976

Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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Figure 2
Structure factor of polarized BaTiO₃. (a) Argand diagram for the Friedel pair of reflections. The sum of contributions from non-resonant atoms is denoted $[{\tilde F}_h]$ . The anomalously scattering atom contributes with an atomic scattering factor, including the dispersion corrections. The relative phase between the contribution from this atom and all the other atoms is denoted ψ. (b) The tetragonal unit cell of polarized BaTiO₃. The arrow illustrates that polarization emerges due to the displacement of the Ti⁴⁺ ion along the [001] direction.

FOUNDATIONS
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ISSN: 2053-2733

Volume 77| Part 4| July 2021| Pages 257-261

https://doi.org/10.1107/S2053273321004976

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