Projects per year
Abstract
We report the existence of a stable twin defect in Fe3O4 thin films. By using aberration corrected scanning transmission electron microscopy and spectroscopy the atomic structure of the twin boundary has been determined. The boundary is confined to the (111) growth plane and it is non-stoichiometric due to a missing Fe octahedral plane. By first principles calculations we show that the local atomic structural configuration of the twin boundary does not change the nature of the superexchange interactions between the two Fe sublattices across the twin grain boundary. Besides decreasing the half-metallic band gap at the boundary the altered atomic stacking at the boundary does not change the overall ferromagnetic (FM) coupling between the grains.
Original language | English |
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Article number | 20943 |
Pages (from-to) | 20943 |
Number of pages | 8 |
Journal | Scientific Reports |
Volume | 6 |
DOIs | |
Publication status | Published - 15 Feb 2016 |
Bibliographical note
© 2016, The AuthorsProjects
- 3 Finished
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Half-metallic Ferromagnets: materials fundamentals for next-generation spintronics
Lazarov, V. (Principal investigator), Hirohata, A. (Co-investigator) & McKenna, K. P. (Co-investigator)
1/10/13 → 31/01/18
Project: Research project (funded) › Research
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RPF 13/14 High-energy-resolution spectroscopy of functional nanomaterials
McKenna, K. P. (Co-investigator), Lazarov, V. (Principal investigator), Clark, J. H. (Co-investigator) & Pratt, A. (Co-investigator)
1/08/13 → 31/07/14
Project: Other project › Other internal award
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Non-equilibrium electron-ion dynamics in thin metal-oxide
McKenna, K. P. (Principal investigator)
1/01/13 → 30/04/18
Project: Research project (funded) › Research