Antiphase boundaries in truncated octahedron-shaped Zn-doped magnetite nanocrystals. Issue 47 (28th November 2018)

• Record Type: Journal Article
• Authors: Fontaiña-Troitiño, Nerio; Ramos-Docampo, Miguel A.; Testa-Anta, Martín; Rodríguez-González, Benito; Bañobre-López, Manuel; Bocher, Laura; McKenna, Keith P.; Salgueiriño, Verónica
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 47(2018)
• Page Start: 12800
• Page End: 12807
• Publication Date: 2018-11-28
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc05731a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Antiphase boundaries perpendicular to the [111] direction of the spinel structure of the nanocrystals promote a local Fe–Fe enrichment at these individual lattice defects. Abstract : 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 [111] 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.