Influence of Thickness on the Magnetic and Magnetotransport Properties of Epitaxial La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> Films Deposited on STO (0 0 1)
Simona Gabriela Greculeasa,
Anda-Elena Stanciu,
Aurel Leca,
Andrei Kuncser,
Luminita Hrib,
Cristina Chirila,
Iuliana Pasuk,
Victor Kuncser
Affiliations
Simona Gabriela Greculeasa
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Anda-Elena Stanciu
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Aurel Leca
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Andrei Kuncser
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Luminita Hrib
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Cristina Chirila
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Iuliana Pasuk
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Victor Kuncser
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
Epitaxial La0.7Sr0.3MnO3 films with different thicknesses (9–90 nm) were deposited on SrTiO3 (0 0 1) substrates by pulsed laser deposition. The films have been investigated with respect to morpho-structural, magnetic, and magneto-transport properties, which have been proven to be thickness dependent. Magnetic contributions with different switching mechanisms were evidenced, depending on the perovskite film thickness. The Curie temperature increases with the film thickness. In addition, colossal magnetoresistance effects of up to 29% above room temperature were evidenced and discussed in respect to the magnetic behavior and film thickness.
