Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F15%3A00081239" target="_blank" >RIV/00216224:14740/15:00081239 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/15:00449995

Výsledek na webu

<a href="http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928627" target="_blank" >http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928627</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4928627" target="_blank" >10.1063/1.4928627</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration

Popis výsledku v původním jazyce

Solid-state dewetting is used to fabricate supersaturated, submicron-sized Au-Ni solid solution particles out of thin Au/Ni bilayers by means of a rapid thermal annealing technique. Phase separation in such particles is studied with respect to their equilibrium crystal (or Wulff) shape by subsequent annealing at elevated temperature. It is found that {100} faceting planes of the equilibrated particles are enriched with Ni and {111} faces with Au. Both phases are considered by quantum-mechanical calculations in combination with an error-reduction scheme that was developed to compensate for a missing exchange-correlation potential that would reliably describe both Au and Ni. The observed phase configuration is then related to the minimization of stronglyanisotropic elastic energies of Au- and Ni-rich phases and results in a rather unique nanoparticle composite state that is characterized by nearly uniform value of elastic response to epitaxial strains all over the faceted surface.

Název v anglickém jazyce

Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration

Popis výsledku anglicky

Solid-state dewetting is used to fabricate supersaturated, submicron-sized Au-Ni solid solution particles out of thin Au/Ni bilayers by means of a rapid thermal annealing technique. Phase separation in such particles is studied with respect to their equilibrium crystal (or Wulff) shape by subsequent annealing at elevated temperature. It is found that {100} faceting planes of the equilibrated particles are enriched with Ni and {111} faces with Au. Both phases are considered by quantum-mechanical calculations in combination with an error-reduction scheme that was developed to compensate for a missing exchange-correlation potential that would reliably describe both Au and Ni. The observed phase configuration is then related to the minimization of stronglyanisotropic elastic energies of Au- and Ni-rich phases and results in a rather unique nanoparticle composite state that is characterized by nearly uniform value of elastic response to epitaxial strains all over the faceted surface.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Applied Physics Letters

ISSN

0003-6951

e-ISSN

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Svazek periodika

107

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

"nestránkováno"

Kód UT WoS článku

000360390500052

EID výsledku v databázi Scopus

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