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Institut f. Physik
FG Nanostrukturierte Materialien
Martin-Luther-Universitat
Halle-Wittenberg
Von-Danckelmann-Platz 3,
D-06120 Halle, Germany

Tel.:  +49 345 55 25321
Fax.: +49 345 55 27034

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Abstract

P. Graziosi, A. Gambardella, M. Calbucci, K. O’Shea, D. A. MacLaren A. Riminucci, I. Bergenti, S. Fugattini, M. Prezioso, N. Homonnay, G. Schmidt, D. Pullini, D. Busquets-Mataix, and V. Dediu
Seed layer technique for high quality epitaxial manganite films
Advances 6 (2017-04-14 13:21:05), 085109
DOI: http://dx.doi.org/10.1063/1.4961228


We introduce an innovative approach to the simultaneous control of growth mode and magnetotransport properties of manganite thin films, based on an easy-to-implement film/substrate interface engineering. The deposition of a manganite seed layer and the optimization of the substrate temperature allows a persistent bi-dimensional epitaxy and robust ferromagnetic properties at the same time. Structural measurements confirm that in such interface-engineered films, the optimal properties are related to improved epitaxy. A new growth scenario is envisaged, compatible with a shift from heteroepitaxy towards pseudo-homoepitaxy. Relevant growth parameters such as formation energy, roughening temperature, strain profile and chemical states are derived.

http://aip.scitation.org/doi/full/10.1063/1.4961228
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