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Quantitative mapping of nanotwin variants in the bulk

Schultheiß, Jan ; Porz, Lukas ; Kodumudi Venkataraman, Lalitha ; Höfling, Marion ; Yildirim, Can ; Cook, Phil ; Detlefs, Carsten ; Gorfman, Semën ; Rödel, Jürgen ; Simons, Hugh (2023)
Quantitative mapping of nanotwin variants in the bulk.
In: Scripta Materialia, 2021, 199
doi: 10.26083/tuprints-00023202
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Item Type: Article
Type of entry: Secondary publication
Title: Quantitative mapping of nanotwin variants in the bulk
Language: English
Date: 10 February 2023
Place of Publication: Darmstadt
Year of primary publication: 2021
Publisher: Elsevier
Journal or Publication Title: Scripta Materialia
Volume of the journal: 199
Collation: 5 Seiten
DOI: 10.26083/tuprints-00023202
Corresponding Links:
Origin: Secondary publication service
Abstract:

Crystallographic twins are critical to the properties of numerous materials from magnesium alloys to piezoelectrics. Since the onset of the twin formation is highly sensitive to the triaxial mechanical boundary conditions, non-destructive bulk microscopy techniques are required. Elastic strains can be mapped via X-ray diffraction with a 100-200 nm resolution. However, the interplay of strains with nanotwins cannot be characterized. Here, a method based on dark-field X-ray microscopy to quantify the density of nanotwin variants with twin lamellae of sizes as small as several tens of nanometers in embedded subvolumes (70x200x600 nm³) in millimeter-sized samples is introduced. The methodology is corroborated by correlating the local density of twin variants to the long-ranging strain fields for a high-performance piezoelectric material. The method facilitates direct, in situ mapping and quantification of nanoscale structural changes together with their elastic driving fields, which is the key towards controlling and engineering material's performance at nanometric scales.

Uncontrolled Keywords: Twinning, X-ray diffraction, Domains, Ferroelectricity, Elasto-morphological coupling
Identification Number: 113878
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-232029
Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 10 Feb 2023 09:24
Last Modified: 04 Jan 2024 12:06
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23202
PPN: 507931165
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