English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Anti-phase boundary accelerated exsolution of nanoparticles in non-stoichiometric perovskite thin films

Han, H., Xing, Y., Park, B., Bazhanov I, D., Jin, Y., Irvine, J. T. S., et al. (2022). Anti-phase boundary accelerated exsolution of nanoparticles in non-stoichiometric perovskite thin films. Nature Communications, 13: 6682. doi:10.1038/s41467-022-34289-3.

Item is

Files

show Files
hide Files
:
s41467-022-34289-3.pdf (Publisher version), 6MB
Name:
s41467-022-34289-3.pdf
Description:
-
OA-Status:
Gold
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2022
Copyright Info:
The Author(s)

Locators

show
hide
Locator:
https://doi.org/10.1038/s41467-022-34289-3 (Publisher version)
Description:
-
OA-Status:
Gold

Creators

show
hide
 Creators:
Han, Hyeon1, Author                 
Xing, Yaolong2, Author
Park, Bumsu2, Author
Bazhanov I, Dmitry2, Author
Jin, Yeongrok2, Author
Irvine, John T. S.2, Author
Lee, Jaekwang2, Author
Oh, Sang Ho2, Author
Affiliations:
1Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              
2external, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Exsolution of excess transition metal cations from a non-stoichiometric perovskite oxide has sparked interest as a facile route for the formation of stable nanoparticles on the oxide surface. However, the atomic-scale mechanism of this nanoparticle formation remains largely unknown. The present in situ scanning transmission electron microscopy combined with density functional theory calculation revealed that the anti-phase boundaries (APBs) characterized by the a/2 < 011> type lattice displacement accommodate the excess B-site cation (Ni) through the edge-sharing of BO<sub>6</sub> octahedra in a non-stoichiometric ABO<sub>3</sub> perovskite oxide (La<sub>0.2</sub>Sr<sub>0.7</sub>Ni<sub>0.1</sub>Ti</sub>0.9</sub>O<sub>3-δ</sub>) and provide the fast diffusion pathways for nanoparticle formation by exsolution. Moreover, the APBs further promote the outward diffusion of the excess Ni toward the surface as the segregation energy of Ni is lower at the APB/surface intersection. The formation of nanoparticles occurs through the two-step crystallization mechanism, i.e., the nucleation of an amorphous phase followed by crystallization, and via reactive wetting on the oxide support, which facilitates the formation of a stable triple junction and coherent interface, leading to the distinct socketing of nanoparticles to the oxide support. The atomic-scale mechanism unveiled in this study can provide insights into the design of highly stable nanostructures.

Details

show
hide
Language(s):
 Dates: 2022-11-05
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 13 Sequence Number: 6682 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723