Atomic-Scale Structural and Magnetic Coupling Properties of Twin Boundaries in LiFe5O8 Film

Kun Liu; Jiankang Li; Songyou Zhang

doi:10.20944/preprints202406.1300.v1

Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 18 June 2024 / Approved: 18 June 2024 / Online: 19 June 2024 (12:57:54 CEST)

It is of great academic significance to understand how the atomic structure of interfaces and boundaries in materials impacts the magnetic coupling nature across the boundaries and encourage development of state-of-the-art magnetic devices. Here, we carry out a systematic investigation of the atomic and electronic structures of twin boundaries (TBs) in LiFe5O8 thin films and determine their concurrent magnetic couplings using atomic-resolution transmission electron microscopy and atomistic first-principles calculations. The results show ferromagnetic or antiferromagnetic coupling can exist across the different TBs in LiFe5O8 (LFO) thin films and electrical structures within a few atomic layers directly rely on the TB atomic core structures. Uncovering one-to-one relationship between the magnetic properties of individual TB and the local atomic structures will clarify a thorough comprehension of numerous fascinating magnetic properties of commonly utilized magnetic materials, which will undoubtedly encourage the progress of sophisticated magnetic materials and devices.

lithium ferrite; twin boundaries; magnetic; electron microscopy

Chemistry and Materials Science, Electronic, Optical and Magnetic Materials

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Atomic-Scale Structural and Magnetic Coupling Properties of Twin Boundaries in LiFe5O8 Film

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