PI-MOCVD technology of (La, Sr)(Mn, Co)O3: From epitaxial to nanostructured films

Metal‐Organic Chemical Vapor Deposition of Oxide Perovskite Films: A Facile Route to Complex Functional Systems

“…Indeed, growing on YSZ and sapphire substrates produced significantly more disordered films with higher resistivity and MR across a wider temperature range. [87] Vagner et al [88] recently employed the PI-MOCVD approach to synthesize Sr-and Co-doped lanthanum manganite films, La (1-x) Sr x Mn (1-y) Co y O 3 (LSMCO), which is a material of interest as an active layer to make magnetic field sensors work at room temperature. The films were deposited on different single crystal substrates: LaAlO 3 and r-plane sapphire at 750 °C under different optimized conditions.…”

“…Furthermore, at room temperature, MR experiments demonstrated the maximum MR for nanostructured films with Co amount of y = 0.06 at a magnetic field of 2T and reduced anisotropic behavior for films with Co content in the range from 0.12 to 0.17. [88] Among the doped manganite perovskites, the Pr (1-x) Ca x MnO 3 (PCMO) manganite has been extensively studied, for its significant MR properties. Catalano et al [51,89] proposed an MOCVD approach for the deposition of pure PCMO on SrTiO 3 (001), SrTiO 3 (110), MgO (001), and LaAlO 3 (001) substrates, using a mixture of Pr(hfa) 3 diglyme, Ca(hfa) 2 tetraglyme, and Mn(tmhd) 3 as precursors.…”

“…Furthermore, at room temperature, MR experiments demonstrated the maximum MR for nanostructured films with Co amount of y = 0.06 at a magnetic field of 2T and reduced anisotropic behavior for films with Co content in the range from 0.12 to 0.17. [ 88 ]…”

“…LSMCO films: a) XRD θ/2θ patterns of films grown on LaAlO 3 substrate with different Co content; b,c) SEM images of films grown on LaAlO 3 and sapphire, respectively; d,e) (111) characteristic pole figures of LSMCO/ LaAlO 3 and LSMCO/r-plane sapphire. Adapted with permission [88]. Copyright 2020, Elsevier.…”

Surface and structural analysis of epitaxial La1−xSrx (Mn1−yCoy)zO3 films

“…Depending on the application at different range of temperatures and magnetic fields, the properties of the magnetic materials could be influenced by different technological ways, eg, growth of epitaxial or nanostructured films and chemical engineering. The epitaxial or polycrystalline structure can be influenced by the change of growth method and growth conditions 3 as well as by the choice of substrates for the film growth 4 . Moreover, the change of chemical composition/doping of the manganite films could drastically influence the properties of manganites having dielectric, 5 as well as ferromagnetic 6–8 properties.…”