Oscillating Grain Boundaries and Their Effects on Grain Growth: Observations in Skyrmion Bicrystals

Xiaotian Fang; Valeria Viteri-Pflucker; Alexander H. King; Jian Wang; Jiaqiang Yan; Liqin Ke; Lin Zhou

doi:10.1016/j.actamat.2025.120965

Oscillating Grain Boundaries and Their Effects on Grain Growth: Observations in Skyrmion Bicrystals

Xiaotian Fang
, Valeria Viteri-Pflucker
, Alexander H. King
, Jian Wang
, Jiaqiang Yan
, Liqin Ke
, Lin Zhou

Correlated Electron Materials

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Grain boundary migration is usually considered to occur through the consistent motion of grain boundaries toward their centers of curvature, ultimately leading to grain growth. However, we show that in 2D skyrmion bicrystals comprising individual grains of hexagonal symmetry, grain boundaries can undergo large amplitude oscillations while maintaining their basic geometric features. Wave-like boundary motion, triggered by individual and collective motion of particles at the grain boundaries, is a behavior that is not accounted for in traditional models of grain boundary migration. Our findings highlight the need for further investigation into the dynamics of grain boundaries during grain growth.

Original language	English
Article number	120965
Journal	Acta Materialia
Volume	290
DOIs	https://doi.org/10.1016/j.actamat.2025.120965
State	Published - May 15 2025

Funding

We acknowledge helpful discussions with Prof. Robert J MacQueeney from Iowa State University and Dr. Fei Zhou from Lawrence Livermore National Laboratory. This work was supported in part by Laboratory Directed Research and Development funds through Ames National Laboratory and start-up funding from Iowa State University. All TEM-related work was performed using instruments in the Sensitive Instrument Facility in Ames National Laboratory. V.V.P. is grateful to the DOE for the assistantship and opportunity to participate in the SULI program. Ames National Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. Work at ORNL was supported by the U. S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Keywords

Grain Boundary
Grain Boundary Migration
Grain Boundary Oscillation
Skyrmion

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10.1016/j.actamat.2025.120965

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title = "Oscillating Grain Boundaries and Their Effects on Grain Growth: Observations in Skyrmion Bicrystals",

abstract = "Grain boundary migration is usually considered to occur through the consistent motion of grain boundaries toward their centers of curvature, ultimately leading to grain growth. However, we show that in 2D skyrmion bicrystals comprising individual grains of hexagonal symmetry, grain boundaries can undergo large amplitude oscillations while maintaining their basic geometric features. Wave-like boundary motion, triggered by individual and collective motion of particles at the grain boundaries, is a behavior that is not accounted for in traditional models of grain boundary migration. Our findings highlight the need for further investigation into the dynamics of grain boundaries during grain growth.",

keywords = "Grain Boundary, Grain Boundary Migration, Grain Boundary Oscillation, Skyrmion",

author = "Xiaotian Fang and Valeria Viteri-Pflucker and King, \{Alexander H.\} and Jian Wang and Jiaqiang Yan and Liqin Ke and Lin Zhou",

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T2 - Observations in Skyrmion Bicrystals

AU - Fang, Xiaotian

AU - Viteri-Pflucker, Valeria

AU - King, Alexander H.

AU - Wang, Jian

AU - Yan, Jiaqiang

AU - Ke, Liqin

AU - Zhou, Lin

PY - 2025/5/15

Y1 - 2025/5/15

N2 - Grain boundary migration is usually considered to occur through the consistent motion of grain boundaries toward their centers of curvature, ultimately leading to grain growth. However, we show that in 2D skyrmion bicrystals comprising individual grains of hexagonal symmetry, grain boundaries can undergo large amplitude oscillations while maintaining their basic geometric features. Wave-like boundary motion, triggered by individual and collective motion of particles at the grain boundaries, is a behavior that is not accounted for in traditional models of grain boundary migration. Our findings highlight the need for further investigation into the dynamics of grain boundaries during grain growth.

AB - Grain boundary migration is usually considered to occur through the consistent motion of grain boundaries toward their centers of curvature, ultimately leading to grain growth. However, we show that in 2D skyrmion bicrystals comprising individual grains of hexagonal symmetry, grain boundaries can undergo large amplitude oscillations while maintaining their basic geometric features. Wave-like boundary motion, triggered by individual and collective motion of particles at the grain boundaries, is a behavior that is not accounted for in traditional models of grain boundary migration. Our findings highlight the need for further investigation into the dynamics of grain boundaries during grain growth.

KW - Grain Boundary

KW - Grain Boundary Migration

KW - Grain Boundary Oscillation

KW - Skyrmion

UR - https://www.scopus.com/pages/publications/105001016305

U2 - 10.1016/j.actamat.2025.120965

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M3 - Article

AN - SCOPUS:105001016305

SN - 1359-6454

VL - 290

JO - Acta Materialia

JF - Acta Materialia

M1 - 120965

ER -

Oscillating Grain Boundaries and Their Effects on Grain Growth: Observations in Skyrmion Bicrystals

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