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Stability of the Cationic Oxidation States in Pr0.50Sr0.50CoO3 across the Magnetostructural Transition by X-ray Absorption Spectroscopy

Stability of the Cationic Oxidation States in Pr0.50Sr0.50CoO3 across the Magnetostructural Transition by X-ray Absorption Spectroscopy

Jessica Padilla-Pantoja*, Javier Herrero-Martín, Pierluigi Gargiani, S. Manuel Valvidares, Vera Cuartero, Kurt Kummer, Oliver Watson, Nicholas B. Brookes, and José Luis García-MuñozInorg. Chem., 2014, 53 (17), pp 8854–8858DOI: 10.1021/ic403117j10.1021/ic403117j

Domain matching epitaxy of ferrimagnetic CoFe2O4 thin films on Sc2O3/Si(111)

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19-12-2011_12-05-14

F. Sánchez, R. Bachelet, P. de Coux, B. Warot-Fonrose, V. Skumryev, L. Tarnawska, P. Zaumseil, T. Schroeder, and J. Fontcuberta

Ferrimagnetic spinel CoFe2O4 (CFO) films are integrated with Si(111) using Sc2O3 buffer layers. The huge lattice mismatch (17%) between CFO and Sc2O3 is accommodated by domain matching, and CFO grows epitaxially with (111) out-of-plane orientation and coexistence of A- and B-type in-plane crystal variants. CFO films have low roughness of 4 Å and saturation magnetization of about 300 emu/cm3. These properties make CFO films on Sc2O3-buffered Si(111) comparable to those grown on oxide single crystals and thus extend the possibilities of using spinel oxides in electronic devices.

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