DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Study of the Internal Compositions of Binary Alloy Pd-Rh Nanoparticles by Using Bragg Coherent Diffraction Imaging

Abstract

Bragg coherent diffraction imaging (BCDI), a well-established technique for imaging the internal strain of nanoparticles, was used to image the internal compositional distribution of binary alloys in thermal equilibrium. The images experimentally obtained for Pd-Rh alloy nanoparticles are presented and discussed. A direct correspondence between the lattice strain and the compositional deviation is discussed with the derivation of the BCDI displacement field aided by illustrations. The correspondence suggests that the longitudinal derivative of the displacement field, the strain induced by compositional heterogeneity, can be quantitatively converted to 3D images of the compositional deviation from the particle average by using Vegard’s law. It also suggests that the transverse derivative can be qualitatively associated with the disorder of Bragg planes. The studied Pd-Rh alloy nanoparticle exhibited internal composition heterogeneity; the Rh composition tends to be high at edges and corners between facets and gradually decreases from the surface to the core of the particle.

Authors:
 [1];  [2];  [3];  [3];  [3];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States); Tohoku Univ., Sendai (Japan)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Safarik Univ., Kosice (Slovak Republic)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Slovak Research and Development Agency (SRDA); Japan Society for the Promotion of Science (JSPS); European Union (EU)
OSTI Identifier:
1572081
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Korean Physical Society
Additional Journal Information:
Journal Volume: 75; Journal Issue: 7; Journal ID: ISSN 0374-4884
Publisher:
Korean Physical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BCDI; alloy nanoparticles; coherent x-ray

Citation Formats

Kawaguchi, Tomoya, Cha, Wonsuk, Latyshev, Vitalii, Vorobiov, Serhii, Komanicky, Vladimir, and You, Hoydoo. Study of the Internal Compositions of Binary Alloy Pd-Rh Nanoparticles by Using Bragg Coherent Diffraction Imaging. United States: N. p., 2019. Web. doi:10.3938/jkps.75.528.
Kawaguchi, Tomoya, Cha, Wonsuk, Latyshev, Vitalii, Vorobiov, Serhii, Komanicky, Vladimir, & You, Hoydoo. Study of the Internal Compositions of Binary Alloy Pd-Rh Nanoparticles by Using Bragg Coherent Diffraction Imaging. United States. https://doi.org/10.3938/jkps.75.528
Kawaguchi, Tomoya, Cha, Wonsuk, Latyshev, Vitalii, Vorobiov, Serhii, Komanicky, Vladimir, and You, Hoydoo. Thu . "Study of the Internal Compositions of Binary Alloy Pd-Rh Nanoparticles by Using Bragg Coherent Diffraction Imaging". United States. https://doi.org/10.3938/jkps.75.528. https://www.osti.gov/servlets/purl/1572081.
@article{osti_1572081,
title = {Study of the Internal Compositions of Binary Alloy Pd-Rh Nanoparticles by Using Bragg Coherent Diffraction Imaging},
author = {Kawaguchi, Tomoya and Cha, Wonsuk and Latyshev, Vitalii and Vorobiov, Serhii and Komanicky, Vladimir and You, Hoydoo},
abstractNote = {Bragg coherent diffraction imaging (BCDI), a well-established technique for imaging the internal strain of nanoparticles, was used to image the internal compositional distribution of binary alloys in thermal equilibrium. The images experimentally obtained for Pd-Rh alloy nanoparticles are presented and discussed. A direct correspondence between the lattice strain and the compositional deviation is discussed with the derivation of the BCDI displacement field aided by illustrations. The correspondence suggests that the longitudinal derivative of the displacement field, the strain induced by compositional heterogeneity, can be quantitatively converted to 3D images of the compositional deviation from the particle average by using Vegard’s law. It also suggests that the transverse derivative can be qualitatively associated with the disorder of Bragg planes. The studied Pd-Rh alloy nanoparticle exhibited internal composition heterogeneity; the Rh composition tends to be high at edges and corners between facets and gradually decreases from the surface to the core of the particle.},
doi = {10.3938/jkps.75.528},
journal = {Journal of the Korean Physical Society},
number = 7,
volume = 75,
place = {United States},
year = {Thu Oct 10 00:00:00 EDT 2019},
month = {Thu Oct 10 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: (a) SEM image of the Pd-Rh nanoparticles grown on a STO substrate. Only one nanoparticle of ~200 nm in size was selected for a well-defined fringe pattern and used in obtaining the diffraction patterns. (b) Typical Bragg diffraction pattern from the particle on a square root scale ofmore » the intensity. Sixty diffraction patterns like this were obtained in a rocking scan to form a 3D data set.« less

Save / Share:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.