Effects of Substitution and Substrate Strain on the Structure and Properties of Orthorhombic Eu_1-xY_xMnO₃ (0 x 0.5) Thin Films

The effects on the structure and magnetic properties of Eu1-xYxMnO3 (0.0 & LE; x & LE; 0.5) thin films due to lattice strain were investigated and compared with those obtained in equivalent composition ceramics. The films were deposited by spin-coating chemical solution onto Pt\TiO2\SiO2\Si (100) standard substrates. X-ray diffraction and Raman spectroscopy measurements revealed that all films crystallize in orthorhombic structure with space group Pnma, observing an added contraction of the unit cell with increasing Y-substitution ou Eu, corresponding to a broadening of the Mn-O1-Mn angle and a gradual decrease in magnetic order response.