Direct Visualization of Localized Vibrations at Complex Grain Boundaries

© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 13 vom: 26. März, Seite e2208920
1. Verfasser: Hoglund, Eric R (VerfasserIn)
Weitere Verfasser: Bao, De-Liang, O'Hara, Andrew, Pfeifer, Thomas W, Hoque, Md Shafkat Bin, Makarem, Sara, Howe, James M, Pantelides, Sokrates T, Hopkins, Patrick E, Hachtel, Jordan A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article dislocations grain boundaries local atomic vibrations phonons vibrational states
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520 |a Grain boundaries (GBs) are a prolific microstructural feature that dominates the functionality of a wide class of materials. The functionality at a GB results from the unique atomic arrangements, different from those in the grain, that have driven extensive experimental and theoretical studies correlating atomic-scale GB structures to macroscopic electronic, infrared optical, and thermal properties. In this work, a SrTiO3 GB is examined using atomic-resolution aberration-corrected scanning transmission electron microscopy and ultrahigh-energy-resolution monochromated electron energy-loss spectroscopy, in conjunction with density functional theory. This combination enables the correlation of the GB structure, nonstoichiometry, and chemical bonding with a redistribution of vibrational states within the GB dislocation cores. The new experimental access to localized GB vibrations provides a direct route to quantifying the impact of individual boundaries on macroscopic properties 
650 4 |a Journal Article 
650 4 |a dislocations 
650 4 |a grain boundaries 
650 4 |a local atomic vibrations 
650 4 |a phonons 
650 4 |a vibrational states 
700 1 |a Bao, De-Liang  |e verfasserin  |4 aut 
700 1 |a O'Hara, Andrew  |e verfasserin  |4 aut 
700 1 |a Pfeifer, Thomas W  |e verfasserin  |4 aut 
700 1 |a Hoque, Md Shafkat Bin  |e verfasserin  |4 aut 
700 1 |a Makarem, Sara  |e verfasserin  |4 aut 
700 1 |a Howe, James M  |e verfasserin  |4 aut 
700 1 |a Pantelides, Sokrates T  |e verfasserin  |4 aut 
700 1 |a Hopkins, Patrick E  |e verfasserin  |4 aut 
700 1 |a Hachtel, Jordan A  |e verfasserin  |4 aut 
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