Structure, magnetic, and electronic properties in epitaxial Ca_1-xSr_xMn₇O₁₂ films

The quadruple perovskite CaMn₇O₁₂ has garnered attention over the years due to the interesting physics in this unique crystal structure. Mn ions are simultaneously present on both the A- and B-site, with both Mn³⁺ and Mn⁴⁺ ions on the B-site. Due to the presence of different sites of the Mn ions in this complex oxide, this perovskite exhibits an array of collectively ordered states: spin, orbital, charge, and lattice. Here, we present a detailed study on the synthesis of epitaxially grown Ca_1-xSr_xMn₇O₁₂ thin films by utilizing x-ray diffraction, neutron diffraction, transport, and magnetometry approaches to understand the underlying physics present in the magnetic and electronic properties. This talk will focus on how the charge-ordering and magnetic-ordering transitions are altered through Sr doping (x) and due to the influence of growth parameters.