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Abstract: Aurivillius-structured Bi4.15Nd0.85Ti3FeO15 multiferroic thin films with four perovskite slabs were deposited on Pt/Ti/ SiO2/Si substrates by the metal–organic decomposition method. The structural, dielectric and multiferroic properties of the films were investigated. Good ferroelectric behavior along with large dielectric constant and small loss factor were observed at room temperature. A weak ferromagnetic rather than an antiferromagnetic property was observed at room temperature by magnetic measurement. Moreover, the ferromagnetic property was enhanced when the temperature was below 13 K and a large saturation magnetization of about 5.4 emu/cm3 was obtained at 4 K. Possible reasons are put forward to discuss the complicated magnetic property. [ABSTRACT FROM AUTHOR]

Abstract: Dense and flat SrZrO3 films in an orthorhombic (Pbnm) perovskite phase are fabricated on fused quartz substrates via the metal organic decomposition method. Optical measurements show that the average transmittance of the films is about 90% for light with a wavelength longer than 240 nm, and the absorption edge of the films shifts to longer wavelengths with an increase of annealing temperature and film thickness. Meanwhile, first-principles calculations are performed by using an accurate Vienna ab initio simulation package to explore the electronic band structure of orthorhombic SrZrO3. The observed shift of the absorption edge could be well explained by the size effect on the band structure. [Copyright &y& Elsevier]