Dynamics of dislocation formations and their impacts on exsolution in Ru-doped perovskite oxide
Sungwook Choi, Younghwan Lim, Puspendu Guha, Hayoung Kim, Jaeseung Kim, Sungwon Kim, Ross Harder, Wonsuk Cha, Hoyoung Suh, Jinseok Ryu, Sungeun Yang, Ho-Il Ji, Deok-Hwang Kwon, Hyunjung Kim · 2026
Read Dynamics of dislocation formations and their impacts on exsolution in Ru-doped perovskite oxide by Sungwook Choi, Younghwan Lim, Puspendu Guha, Hayoung Kim, Jaeseung Kim, Sungwon Kim, Ross Harder, Wonsuk Cha, Hoyoung Suh, Jinseok Ryu, Sungeun Yang, Ho-Il Ji, Deok-Hwang Kwon, Hyunjung Kim (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13385905.txt.
Description
Sungwook Choi's team watched line defects guide metal particle exsolution in a doped perovskite, in a 2026 study. Self-assembled metal particles exsolved from host oxides excel in catalysis, but dopant transport pathways and defect interactions stayed hidden in the bulk. The team used in situ Bragg coherent X-ray imaging and electron microscopy during reduction of ruthenium-doped barium cerate.
Line defects nucleated in the bulk interior and propagated to the surface during reduction. Ruthenium dopant correlated specifically with mixed line-defect formation, and these defects acted as mobile carriers taking dopant to the surface. The pathway explains exsolution site, density, and spread, guiding design of more active and stable catalysts.
Catalog record
| CREATOR | Sungwook Choi, Younghwan Lim, Puspendu Guha, Hayoung Kim, Jaeseung Kim, Sungwon Kim, Ross Harder, Wonsuk Cha, Hoyoung Suh, Jinseok Ryu, Sungeun Yang, Ho-Il Ji, Deok-Hwang Kwon, Hyunjung Kim |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 49 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |