Preparation and properties of pure crystalline perovskite CeFeO₃ thin films with vanadium doping

Abstract

Cerium ferrite (CeFeO 3 ) thin films doped with vanadium (V:CeFeO 3 ) were grown on SiO 2 quartz glass and <100>-oriented SrTiO 3 (STO) crystal substrates by the radio-frequency magnetron sputtering method in this study. The effects of crystallization, substrate, and V-doping on the quality, the magnetic property and the magneto-optical property of as-prepared films are investigated. V:CeFeO 3 film grown on STO substrate has better crystallinity and has better lattice integrity due to the higher lattice matching between substrate and film. The magnetic hysteresis loop and the magnetic circular dichroism spectra show that the magnetization strength and the magneto-optical properties of V:CeFeO 3 films have the significant anisotropy. Moreover, V-doping and the stress lead to the change in easy magnetization direction of film. It shows that the perovskite B-site doping with transition-metal ion has significant influence on the magnetic and the magnetooptical properties of CeFeO 3 thin films. K E Y W O R D S magnetic circular dichroism, magnetic property, magneto-optical property, perovskite cerium ferrite, thin film, vanadium doping

Optical Dynamics at the Au/ZnPc Interfaces

“…Large lattice mismatches are also reported to cause small binding force. In this case, the ZnPc thin film exhibits spontaneous nucleation crystallization 10 . The spontaneous nucleation process could be accounted as a main reason for the shift in the diffraction angle position and for the lower intensity of the XRD patterns in the presence of Au substrates.…”

“…As we mentioned in the preceding paragraphs of this article, the interfacing of Au with ZnPc ends with stronger interactions between the Au and ZnPc compared to glass/ ZnPc. Such strong interactions which are assisted by small binding forces lead to the completeness of the bonding and as a result increase in the number of oriented electric dipoles 10,11 .…”