AI Article Synopsis
- The study investigates sinusoidal wave-type distortions in LaSrMnO during its low-temperature orthorhombic phase using a technique called multi-beam resonant X-ray diffraction (MRXD).
- Two types of four-beam diffractions with different asymmetries were analyzed at a specific energy level (6.5545 keV) and compared to theoretical simulations based on dynamical X-ray diffraction.
- The results highlight how MRXD can effectively reveal distortion modes that are related to the material's structure and demonstrate its sensitivity to changes in X-ray energy, particularly around the Mn K edge, which supports findings of charge differences between manganese sites.
Article Abstract
Sinusoidal wave type distortions of LaSrMnO in the low-temperature orthorhombic phase were observed using multi-beam resonant X-ray diffraction (MRXD) with (7/4 7/4 0) fractional primary diffraction. Two four-beam diffractions with opposite asymmetry were measured at 6.5545 keV and compared with the curves simulated by the dynamical X-ray diffraction theory. This approach provides the possibility of resolving the distortion modes which are perpendicular to the momentum transfer by a single azimuthal scan. The paper also demonstrates the sensitivity of MRXD profiles versus incident X-ray energy in the vicinity of the Mn K edge to the charge disproportion between the two manganese sites, reconfirming the small charge disproportion feature.
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| http://dx.doi.org/10.1107/S2053273316013759 | DOI Listing |
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