Journal
SCIENTIFIC REPORTS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep45997
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Funding
- US DOE [DE-FG02-08ER46481]
- Engineering and Physical Sciences Research Council (EPSRC)
- EPSRC [EP/K03278X, EP/K013114/1, EP/K000225/1]
- EPSRC [EP/K03278X/1, EP/K000225/1, EP/K013114/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K000225/1, EP/K013114/1, EP/K03278X/1] Funding Source: researchfish
- U.S. Department of Energy (DOE) [DE-FG02-08ER46481] Funding Source: U.S. Department of Energy (DOE)
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The structural, chemical, and magnetic properties of magnetite nanoparticles are compared. Aberration corrected scanning transmission electron microscopy reveals the prevalence of antiphase boundaries in nanoparticles that have significantly reduced magnetization, relative to the bulk. Atomistic magnetic modelling of nanoparticles with and without these defects reveals the origin of the reduced moment. Strong antiferromagnetic interactions across antiphase boundaries support multiple magnetic domains even in particles as small as 12-14 nm.
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