Charge Ordering in α-(BEDT-TTF)2I3by Synchrotron X-ray Diffraction
نویسندگان
چکیده
منابع مشابه
Cation ordering in magnesioferrite, MgFe2O4, to 982 °C using in situ synchrotron X-ray powder diffraction
Magnesioferrite spinel, MgFe2O4, was synthesized at 900 °C from equimolar amounts of reagentgrade oxides, MgO and Fe2O3, and quenched in air. The structural behavior of magnesioferrite was determined from in situ synchrotron X-ray powder-diffraction data [ = 0.92225(4) Å] at room pressure and temperatures from 28 to 982 °C on heating and cooling. The a unit-cell parameter increases linearly on ...
متن کاملResonant x-ray diffraction studies on the charge ordering in magnetite.
Here we show that the low temperature phase of magnetite is associated with an effective, although fractional, ordering of the charge. Evidence and a quantitative evaluation of the atomic charges are achieved by using resonant x-ray diffraction (RXD) experiments whose results are further analyzed with the help of ab initio calculations of the scattering factors involved. By confirming the resul...
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High-resolution, high-energy, X-ray diffraction results are presented for the study of weak charge ordering phenomenon. By utilizing X-rays in the 100 keV region the dramatic increase in the penetration depth allows for both bulk-sensitive and highresolution measurements to be made. The strontium doped La2NiO4 system is a prototypical system in the understanding of strong electron-phonon coupli...
متن کاملComment on "Direct observation of charge ordering in magnetite using resonant multiwave x-ray diffraction".
The study of the Verwey transition in magnetite has been a matter of intense study during the last years [1,2]. The mechanism proposed by Verwey [3] was the charge localization and ordering of the electrons at the iron octahedral sites giving rise to an ordered sequence of Fe3þ and Fe2þ ions. Recent x-ray diffraction and resonant x-ray scattering at the iron K edge have strongly modified this d...
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High mechanical strength is one of the superior properties of metallic glasses which render them promising as a structural material. However, understanding the process of mechanical deformation in strongly disordered matter, such as metallic glass, is exceedingly difficult because even an effort to describe the structure qualitatively is hampered by the absence of crystalline periodicity. In sp...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2007
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.76.113702