Influence of Elastic and Optical Properties on AgFeO2 and AgCrO2 Delafossite to be Applied in High-Frequency Applications
Asmaa A. H. El-Bassuony, H. K. Abdelsalam, W. M. Gamal
Abstract
Abstract Nanometric AgFeO 2 and AgCrO 2 delafossite were easily prepared by the flash auto-combustion method. The two main bands estimated from FTIR (Fourier-transform infrared) analysis were the tetrahedral A-site (573 cm −1 for AgFeO 2 , 630 cm −1 for AgCrO 2 ) and the octahedral B-site (484 cm −1 for AgFeO 2 , 595 cm −1 for AgCrO 2 ). This study is mainly focused on the elastic properties evaluated from the FTIR analysis and showed that AgCrO 2 delafossite is more elastic than AgFeO 2 delafossite. The elastic properties can be explained by studying the longitudinal and transverse velocities. Owing to the optical properties results, AgCrO 2 delafossite is a promising material to be applied in optical devices. However, AgFeO 2 delafossite is a promising material in magnetic applications because it showed a large switching field distribution by 9-fold more than that of AgCrO 2 delafossite. Moreover, high-frequency applications were calculated from the magnetic analysis and showed that both samples could be applied in ultra-high microwave applications.