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Effect of tensile and compressive strains on the transport properties of SmNiO3 layers epitaxially grown on (001) SrTiO3 and LaAlO3 substrates

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9 Author(s)
Conchon, Florine ; Laboratoire Science des Procédés Céramiques et de Traitements de Surfaces (SPCTS), ENSCI, CNRS-UMR 6638, 47 Avenue Albert Thomas, 87065 Limoges, France ; Boulle, Alexandre ; Guinebretiere, Rene ; Girardot, Cecile
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This paper deals with the role of epitaxial strain on the structure and electronic transport properties of metastable SmNiO3 layers grown by metal-organic chemical vapor deposition onto SrTiO3 and LaAlO3 substrates. The characterization of these layers is carried out by high resolution x-ray diffraction and four-probe resistivity measurements. It is found that the SmNiO3 phase is stabilized by in-plane compressive strain whereas in-plane tensile strain induces the creation of oxygen vacancies that induces an annihilation of the metal-insulator transition and a huge increase of the resistivity.

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Applied Physics Letters  (Volume:91 ,  Issue: 19 )