Magnetotransport Properties of La_0.6Sr_0.2Mn_1.2O₃ Films: Effects of Film Thickness and Substrate-Induced Strain

Abstract:

Electric and magnetoresistive properties of La_0.6Sr_0.2Mn_1.2O₃ films deposited on SrTiO₃ (001) and LaAlO₃ (001) single crystalline substrates by magnetron sputtering have been studied. Characteristic features of the evolution of resistivity, magnetoresistance and Curie temperature upon the decrease of film thickness from 500 to 2 nm are specified. A key role of a thin strained layer adjacent to the substrate is demonstrated. The critical thicknesses of the strained layer are calculated for the films deposited on different substrates

• Periodical: Solid State Phenomena (Volume 200)
• Pages: 239-244
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.200.239
• Online since: April 2013
• Authors: Alexandr Tovstolytkin, Taras I. Polek, Alexander I. Matviyenko, Mykola I. Zakharenko, Mykhailo P. Semen'ko, Alexey V. Pashchenko
• Keywords: Curie Temperature, Doped Manganites, Magnetoresistance, Strained Layer, Thin Film

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