An incommensurately modulated structure of eta '-phase of Cu3+xSi determined by quantitative electron diffraction tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00365488" target="_blank" >RIV/68378271:_____/11:00365488 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/11:00365488 RIV/61388980:_____/11:00440189

Výsledek na webu

<a href="http://dx.doi.org/10.1021/ic200102z" target="_blank" >http://dx.doi.org/10.1021/ic200102z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/ic200102z" target="_blank" >10.1021/ic200102z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An incommensurately modulated structure of eta '-phase of Cu3+xSi determined by quantitative electron diffraction tomography

Popis výsledku v původním jazyce

The diffraction data of eta´-Cu(3+x)(Si,Ge) were collected by 3D quantitative electron diffraction tomography on a submicrometer-sized sample, and the structure was solved by the charge-flipping algorithm in superspace. The modulation functions of some atoms are very complicated and reach amplitudes comparable with the unit cell dimensions. The modulated structure can be described as sheets of Cu clusters separated by honeycomb layers of mixed Si/Ge positions. The shape of the Cu clusters in the sheetsstrongly varies with the modulation phase, and the predominant form is an icosahedron. The striving of the Cu layers to form icosahedral clusters is deemed to be the main driving force of the modulation. The combination of methods used in this work can be applied to other structures that are difficult to crystallize in large crystals and opens new perspectives, especially for investigations of aperiodic or otherwise complex metallic alloys.

Název v anglickém jazyce

An incommensurately modulated structure of eta '-phase of Cu3+xSi determined by quantitative electron diffraction tomography

Popis výsledku anglicky

The diffraction data of eta´-Cu(3+x)(Si,Ge) were collected by 3D quantitative electron diffraction tomography on a submicrometer-sized sample, and the structure was solved by the charge-flipping algorithm in superspace. The modulation functions of some atoms are very complicated and reach amplitudes comparable with the unit cell dimensions. The modulated structure can be described as sheets of Cu clusters separated by honeycomb layers of mixed Si/Ge positions. The shape of the Cu clusters in the sheetsstrongly varies with the modulation phase, and the predominant form is an icosahedron. The striving of the Cu layers to form icosahedral clusters is deemed to be the main driving force of the modulation. The combination of methods used in this work can be applied to other structures that are difficult to crystallize in large crystals and opens new perspectives, especially for investigations of aperiodic or otherwise complex metallic alloys.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F09%2F1088" target="_blank" >GA203/09/1088: Příprava nanostrukturovaných Si/Ge/C depozitů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Inorganic Chemistry

ISSN

0020-1669

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

3743-3751

Kód UT WoS článku

000290457700067

EID výsledku v databázi Scopus

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