Title: High-Energy Coherent X-Ray Dffraction Microscopy of Polycrystal Grains: First Steps Towards a Multi-Scale Approach

Abstract

Here, we present proof-of-concept imaging measurements of a polycrystalline material that integrate the elements of conventional high-energy x-ray diffraction microscopy with coherent diffraction-imaging techniques, and that can enable in situ strain-sensitive imaging of lattice structure in ensembles of deeply embedded crystals over five decades of length scale upon full realization. We demonstrate that the combination of these two characterization methods enables a more complete picture of the crystal-lattice strain than either method is capable of providing individually. Such complementary imaging capabilities are critical to addressing questions in a variety of research areas such as materials science and engineering, chemistry, and solid-state physics. Towards this eventual goal, the following key aspects are demonstrated: (1) high-energy Bragg coherent diffraction imaging (HE BCDI) of submicron-scale crystallites at 52 keV at current third-generation synchrotron light sources, (2) HE BCDI performed in conjunction with far-field high-energy diffraction microscopy (FF HEDM) on the grains of a polycrystalline sample in a smoothly integrated manner, and (3) the orientation information of an ensemble of grains obtained via FF HEDM used to perform complementary HE BCDI on multiple Bragg reflections of a single targeted grain. The imaged structures are seen to be 477 ± 50 nm or smaller inmore » size, with an estimated strain resolution of 2.5 x 10^-4. These steps lay the foundation for integration of HE BCDI, which typically provides a spatial resolution tens of nanometers, into a broad suite of well-established HEDM methods, extending HEDM beyond the few-micrometer resolution bound and into the nanoscale, and positioning the approach to take full advantage of the orders-of-magnitude improvement of x-ray coherence expected at fourth-generation light sources presently being built and commissioned worldwide.« less

Authors:

Maddali, S.  ^[1];

• Search DOE PAGES for author "Maddali, S."
• Search DOE PAGES for ORCID "0000-0003-4516-6250"

Park, J. -S. ^[1]; Sharma, H. ^[1]; Shastri, S. ^[1]; Kenesei, P. ^[1]; Almer, J.  ^[1];

• Search DOE PAGES for author "Almer, J."
• Search DOE PAGES for ORCID "0000-0002-1900-2271"

Harder, R. ^[1]; Highland, M. J. ^[1]; Nashed, Y.  ^[1];

• Search DOE PAGES for author "Nashed, Y."
• Search DOE PAGES for ORCID "0000-0001-6146-3939"

Hruszkewycz, S. O.  ^[1]

• Search DOE PAGES for author "Hruszkewycz, S. O."
• Search DOE PAGES for ORCID "0000-0002-9394-9252"

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+ Show Author Affiliations

1. Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:

Thu Aug 27 00:00:00 EDT 2020

Research Org.:

Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:

1756427

Grant/Contract Number:  

AC02-06CH11357

Resource Type:

Accepted Manuscript

Journal Name:

Physical Review Applied

Additional Journal Information:

Journal Volume: 14; Journal Issue: 2; Journal ID: ISSN 2331-7019

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY