2024-03-28T12:02:42Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1663492020-12-13T09:24:29Zcom_10261_34com_10261_5com_10261_89com_10261_3col_10261_287col_10261_342
Unconventional properties of nanometric FeO(111) films on Ru(0001): Stoichiometry and surface structure
Martín-García, L.
Bernal-Villamil, Iván
Oujja, M.
Carrasco, Esther
Gargallo-Caballero, R.
Castillejo, Marta
Marco, J.F.
Gallego, Silvia
de la Figuera, Juan
Ministerio de Economía y Competitividad (España)
We report on the growth of high quality monocrystalline and stoichiometric FeO(111) films on Ru(0001) by infrared pulsed laser deposition (IR-PLD), in a thickness range from below 1 nm to above 8 nm. The films are characterized by low-energy electron diffraction (LEED), X-ray photoelectron spectroscopy (XPS) and ion scattering spectroscopy (ISS). Besides the 1 : 1 Fe/O ratio, they show some unexpected properties, such as the lack of Fe sites at the surface, the (1 × 1) surface symmetry and the large lattice expansion. First-principles calculations show that these properties can be understood from the existence of a wurtzite-like environment at the surface region that preserves the bulk-like antiferromagnetism. This extends the validity of stacking-faults as efficient mechanisms to compensate surface polarity, and suggests that surface-induced processes can be tailored to design nanoscaled materials beyond the parent bulk phase diagram.
2018-06-14T14:44:47Z
2018-06-14T14:44:47Z
2016-03-07
2018-06-14T14:44:47Z
artículo
Journal of Materials Chemistry C 4(9): 1850-1859 (2016)
http://hdl.handle.net/10261/166349
10.1039/c5tc03871e
http://dx.doi.org/10.13039/501100003329
eng
http://doi.org/10.1039/C5TC03871E
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2013-43086-P
closedAccess