68. Antiphase Boundaries in Truncated Octahedron-shaped Zn-doped Magnetite Nanocrystals
Nerio Fontaiña-Troitiño, Miguel A. Ramos-Docampo, Martín Testa-Anta, Benito Rodríguez-González, Manuel Bañobre-López, Laura Bocher, Keith P. McKenna, Verónica Salgueiriño
J. Materials Chemistry C (2018) 6, 12800-12807 (DOI: 10.1039/C8TC05731A).
The presence of antiphase boundaries with local ferromagnetic coupling is herein related to the magnetic performance of truncated octahedron-shaped zinc-doped magnetite nanocrystals. Atomic resolution STEM imaging reveals the presence of these antiphase boundaries perpendicular to the  direction of the spinel structure of the nanocrystals. Magnetic characterization and DFT calculations indicate a local ferromagnetic order, originating from Fe-Fe enrichment at these individual lattice defects in the nanocrystals, as the underlying cause of the magnetic response measured.