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

J 2015

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

HERZ, A.; Martin FRIÁK; D. ROSSBERG; M. HENTSCHEL; F. THESKA et al.

Základní údaje

Originální název

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

Autoři

HERZ, A.; Martin FRIÁK; D. ROSSBERG; M. HENTSCHEL; F. THESKA; D. WANG; D. HOLEC; Mojmír ŠOB; Oldřich SCHNEEWEISS a P. SCHAAF

Vydání

Applied Physics Letters, MELVILLE, AMER INST PHYSICS, 2015, 0003-6951

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.142

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/15:00081239

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

GENERALIZED GRADIENT APPROXIMATION; NANOPOROUS GOLD NANOPARTICLES; AUGMENTED-WAVE METHOD; ELASTIC-CONSTANTS; BILAYER; NICKEL; FABRICATION; PRESSURE; ALLOYS; FILMS

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 26. 11. 2015 09:18, Martina Prášilová

Anotace

V originále

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 strongly anisotropic 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. The same conclusion is yielded also by evaluating bi-axial elastic moduli when employing interpolated experimental elastic constants. This work demonstrates a useful route for studying features of physical metallurgy at the mesoscale. (C) 2015 AIP Publishing LLC.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

GA14-22490S, projekt VaV

Název: Struktura, magnetismus a pevnost rozhraní v pokročilých kovových materiálech

Investor: Grantová agentura ČR, Struktura, magnetismus a pevnost rozhraní v pokročilých kovových materiálech

Citovat

HERZ, A.; Martin FRIÁK; D. ROSSBERG; M. HENTSCHEL; F. THESKA; D. WANG; D. HOLEC; Mojmír ŠOB; Oldřich SCHNEEWEISS a P. SCHAAF. Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration. Applied Physics Letters. MELVILLE: AMER INST PHYSICS, 2015, roč. 107, č. 7, s. "nestránkováno", 5 s. ISSN 0003-6951. Dostupné z: https://doi.org/10.1063/1.4928627.

@article{1318703,
   author = {Herz, A. and Friák, Martin and Rossberg, D. and Hentschel, M. and Theska, F. and Wang, D. and Holec, D. and Šob, Mojmír and Schneeweiss, Oldřich and Schaaf, P.},
   article_location = {MELVILLE},
   article_number = {7},
   doi = {https://doi.org/10.1063/1.4928627},
   keywords = {GENERALIZED GRADIENT APPROXIMATION; NANOPOROUS GOLD NANOPARTICLES; AUGMENTED-WAVE METHOD; ELASTIC-CONSTANTS; BILAYER; NICKEL; FABRICATION; PRESSURE; ALLOYS; FILMS},
   language = {eng},
   issn = {0003-6951},
   journal = {Applied Physics Letters},
   title = {Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration},
   url = {http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928627},
   volume = {107},
   year = {2015}
}

TY  - JOUR
ID  - 1318703
AU  - Herz, A. - Friák, Martin - Rossberg, D. - Hentschel, M. - Theska, F. - Wang, D. - Holec, D. - Šob, Mojmír - Schneeweiss, Oldřich - Schaaf, P.
PY  - 2015
TI  - Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration
JF  - Applied Physics Letters
VL  - 107
IS  - 7
SP  - "nestránkováno"
EP  - "nestránkováno"
PB  - AMER INST PHYSICS
SN  - 00036951
KW  - GENERALIZED GRADIENT APPROXIMATION
KW  - NANOPOROUS GOLD NANOPARTICLES
KW  - AUGMENTED-WAVE METHOD
KW  - ELASTIC-CONSTANTS
KW  - BILAYER
KW  - NICKEL
KW  - FABRICATION
KW  - PRESSURE
KW  - ALLOYS
KW  - FILMS
UR  - http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928627
L2  - http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928627
N2  - 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 strongly anisotropic 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. The same conclusion is yielded also by evaluating bi-axial elastic moduli when employing interpolated experimental elastic constants. This work demonstrates a useful route for studying features of physical metallurgy at the mesoscale. (C) 2015 AIP Publishing LLC.
ER  -

HERZ, A.; Martin FRIÁK; D. ROSSBERG; M. HENTSCHEL; F. THESKA; D. WANG; D. HOLEC; Mojmír ŠOB; Oldřich SCHNEEWEISS a P. SCHAAF. Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration. \textit{Applied Physics Letters}. MELVILLE: AMER INST PHYSICS, 2015, roč.~107, č.~7, s.~''nestránkováno'', 5 s. ISSN~0003-6951. Dostupné z: https://doi.org/10.1063/1.4928627.

Přehled o publikaci