Enhanced electrical conductivity at Fe₃O₄ grain boundaries.

Tingting Yao; Chunyang Gao; Ziyi Sun; Ang Tao; Y Jiang; Zhiqing Yang; Xiu-Liang Ma; Hengqiang Ye; Chunlin Chen

doi:10.1126/sciadv.aeb8164

May 1, 2026

Enhanced electrical conductivity at Fe₃O₄ grain boundaries.

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Key Points

To investigate the atomistic mechanism leading to enhanced electrical conductivity at grain boundaries in Fe3O4.
Analyzed grain boundary structures and their impact on conductivity changes.
Explored the half-metallic-to-metallic transition regarding grain boundary behavior.
Identified the spin-up conduction channel as a key factor in conductivity enhancement.
Demonstrated that tetrahedrally coordinated Fe sublattice contributes to improved electrical properties.

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Implication

Reveals the atomistic mechanism behind enhanced conductivity at grain boundaries, suggesting improved electrical properties of Fe3O4.

Abstract

GBs arises from a half-metallic-to-metallic transition, which is attributed to the spin-up conduction channel provided by tetrahedrally coordinated Fe sublattice. This study reveals the atomistic mechanism of GB-enhanced conductivity, thereby deepening the understanding of GB electrical property.

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Yao et al. (2026) studied this question.

synapsesocial.com/papers/69f837003ed186a739981305 https://doi.org/10.1126/sciadv.aeb8164

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Enhanced electrical conductivity at Fe₃O₄ grain boundaries.

Key Points

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Implication

Abstract

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Enhanced electrical conductivity at Fe₃O₄ grain boundaries.

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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