Doping dependent electronic and magnetic ordering in mixed-valent La1-x Srx MnO3thin films
We have investigated the collective electronic and magnetic orderings of a series of La1-x Sr x MnO3 thin films grown epitaxially strained to (001) oriented strontium titanate substrates as a function of doping, x, for 0 = x = 0.4. We find that the ground states of these crystalline thin films are, in general, consistent with that observed in bulk crystals and thin film samples synthesized under a multitude of techniques. Our systematic study, however, reveal subtle features in the temperature dependent electronic transport and magnetization measurements, which presumably arise due to Jahn-Teller type distortions in the lattice for particular doping levels. For the parent compound LaMnO3 (x = 0), we report evidence of a strain-induced ferromagnetic ordering in contrast to the antiferromagnetic ground state found in bulk crystals.
Payne JA, Bryant CT, Marquez Tavera R, Brown DT, Pekarek TM, Warusawithana MP. Doping dependent electronic and magnetic ordering in mixed-valent La1−x Sr x MnO3 thin films. Materials Research Express. 2022;9(1). doi:10.1088/2053-1591/ac4762