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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F03%2F0924" target="_blank" >GA203/03/0924: Efekty uspořádání a povaha chemické vazby v manganitech na bázi bizmutu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF PHYSICS-CONDENSED MATTER

ISSN

0953-8984

e-ISSN

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Svazek periodika

20

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000256172800013

EID výsledku v databázi Scopus

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