Interface and strain effects on the magnetic properties of manganite multilayers.
We propose to study the magnetic properties at the interface between different Sr-doped oxide-manganites. An enhancement of the spin polarization at the interface of La0.67Sr0.33MnO3 (LSMO)/La1-xSrxMnO3 (LSxMO) with x≤0.1 has been observed with respect to the conventional system LSMO/SrTiO3 (STO), usually employed in tunneling devices. With PNR experiments at the D17 station we expect to obtain a quantitative description of the magnetic profile throughout the multilayers of S//[La0.67Sr0.33MnO3 (10nm)/La0.9Sr0.1MnO (bnm)]4, where 3nm<b<9nm and S is the substrate, which in this case will be STO and (LaAlO3)0.3(Sr2TaAlO6)0.7 (LSAT). Any magnetic reconstruction inherent to the broken symmetry phenomena at the interfaces will be reflected on the magnetic modulation. In addition, the magnetic profile will be studied in terms of the doping level and for different temperatures. We will also be concern of the effect of the strain induced by different substrates. These experiments will be very useful in order to give an accurate description of the magnetic properties in these strong correlated electron systems.
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S J Carreira; Myriam. H. Aguirre; BRIATICO Javier; LOBO CHECA JORGE; MAUREL Laura; Laura B. Steren and VOROBIEV Alexei. (2018). Interface and strain effects on the magnetic properties of manganite multilayers.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-224
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