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Dislocation Engineering: Unlocking Functional Potential in Ceramics
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DOI：10.1016/j.jeurceramsoc.2025.117918.png)
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Abstract
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Dislocations are line defects in crystalline solids that strongly influence material behavior. While their role in mechanical properties of metals is well established, growing attention has recently turned to ceramics, where dislocations can also be harnessed to tune functional performance. Traditionally, dislocation engineering in ceramics was considered impractical due to their intrinsic brittleness. However, advances in processing and deformation techniques now allow for controlled introduction of dislocations without catastrophic cracking, opening new pathways for tailoring ceramic properties. Beyond mechanical properties, dislocations in ceramics are accompanied with high local strain gradient, electrostatic interactions, and local defect chemical environment that impact functional responses. Despite increasing experimental and computational evidence, a comprehensive synthesis of these effects remains lacking. This review highlights representative dislocation-tuned functional properties in ceramics, including transport, ferroelectric, thermal, superconducting, and optical behaviors, and provides insights into the emerging role of dislocation engineering in advancing functional ceramics for potential diverse applications.
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1.7W
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