The checkerboard pattern of Bi0.63Sr0.37MnO3 determined using resonant x-ray scattering at the MnK edge

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F08%3A00022824" target="_blank" >RIV/60461373:22310/08:00022824 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The checkerboard pattern of Bi0.63Sr0.37MnO3 determined using resonant x-ray scattering at the MnK edge
Original language description
A study using resonant x-ray scattering at the Mn K edge has been carried out on a Bi0.63Sr0.37MnO3 single crystal. This compound undergoes a metal - insulator phase transition to the so- called charge ordered ( CO) state at about 530 K. Strong resonancesignals were observed at room temperature as the energy was tuned through the Mn K edge for several superstructures of the CO phase. The energy, polarization and azimuth angle dependences agree with a checkerboard ordering in the ab plane of manganese atoms of two types, in terms of their different local geometrical structures. One of the sites is anisotropic - a tetragonal distorted oxygen octahedron - and the other is isotropic - a nearly undistorted one, as observed for Bi0.5Sr0.5MnO3 and other half- doped manganites. This result indicates that the checkerboard pattern is strongly stable and extends to doping concentrations x < 0.5. No superstructures corresponding to the doubling of the c axis were detected. Intermediate valence st
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/GA203%2F03%2F0924" target="_blank" >GA203/03/0924: Ordering phenomena and chemical bond in bismuth based manganites</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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