An atomic scale STM study of the Fe3O4(001) surface

One-dimensional structural and electronic properties of magnetite Fe3O4(110)

“…This content of Mg 2+ ions is sufficient to play an important role in the observed p(1 · 3) reconstruction. This is supported by a similar p(1 · 4) reconstruction observed on a (0 0 1) surface of a magnetite thin film grown on MgO after annealing at 880 K [20], as well as on a natural magnetite single crystal after long annealing at 990 K [5,8]. In both cases, the reconstruction is interpreted as being induced by the contamination of the surface due to the segregation of Mg 2+ and Ca 2+ ions, respectively.…”

“…The (0 0 1) [4][5][6][7][8] and (1 1 1) [9][10][11][12][13] surfaces of magnetite have been extensively studied by STM both in single-crystal and thin-film forms and several surface terminations have been proposed. It has been shown for these orientations that the preparation conditions are crucial for the type of termination.…”

Control of the morphology and size of magnetite particles with peptides mimicking the Mms6 protein from magnetotactic bacteria

“…The magnetite (1 1 1) surface possesses complicated atomic structures and is proposed to form 6 possible terminations [25], while the (1 0 0) plane is proposed to form a stacking sequence of 2 alternating layers [26]. These surface structures are also known to be highly sensitive to the surrounding atmosphere.…”

Structure, charge distribution, and electron hopping dynamics in magnetite (Fe3O4) (100) surfaces from first principles

“…In principle, at environmentally relevant conditions, the degree of reductive adsorption that occurs on a given magnetite surface varies directly as a function of Fe 2+ availability, which ultimately depends upon both the arrangement of atoms at the surface and the rate at which electrons can migrate through the structure to surface sites. The structure of magnetite (1 0 0) has been reasonably well studied to date, with a ( p 2 Â p 2)R45°reconstruction observed most commonly following annealing under vacuum conditions (Fujii et al, 1990(Fujii et al, , 1994Shvets et al, 1992Shvets et al, , 2004Wiesendanger et al, 1992a,b;Coey et al, 1993;Tarrach et al, 1993;Voogt et al, 1995;Gaines et al, 1997;Kim et al, 1997;Chambers and Joyce, 1999;Peden et al, 1999;Seoighe et al, 1999;Stanka et al, 2000;Mijiritskii and Boerma, 2001;Mariotto et al, 2002;Ceballos et al, 2004;Spiridis et al, 2004;Fonin et al, 2005;Jordan et al, 2005Jordan et al, , 2006aPentcheva et al, 2005Pentcheva et al, , 2008Subagyo et al, 2005;Wang et al, 2006;Stoltz et al, 2008). This reconstruction can be achieved by removing half a layer of Fe tet (A-type), or by introducing oxygen defects in an Fe oct -terminated layer (B-type); the latter can also be stabilized without oxygen defects by inducing a distortion (i.e., Jahn-Teller wave) to the surface Fe oct chains Fonin et al, 2005;Pentcheva et al, 2005Pentcheva et al, , 2008.…”