Abstract
Nanometric AgFeO2 and AgCrO2 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 AgFeO2, 630 cm−1 for AgCrO2) and the octahedral B-site (484 cm−1 for AgFeO2, 595 cm−1 for AgCrO2). This study is mainly focused on the elastic properties evaluated from the FTIR analysis and showed that AgCrO2 delafossite is more elastic than AgFeO2 delafossite. The elastic properties can be explained by studying the longitudinal and transverse velocities. Owing to the optical properties results, AgCrO2 delafossite is a promising material to be applied in optical devices. However, AgFeO2 delafossite is a promising material in magnetic applications because it showed a large switching field distribution by 9-fold more than that of AgCrO2 delafossite. Moreover, high-frequency applications were calculated from the magnetic analysis and showed that both samples could be applied in ultra-high microwave applications.
Highlights
AgFeO2 delafossite is a promising material in magnetic applications because it showed a large switching field distribution by 9-fold more than that of AgCrO2 delafossite
Fourier-transform infrared (FTIR) analysis assured the formation of AgFeO2 and AgCrO2 delafossite
The elastic properties were estimated from the FTIR analysis and showed that AgCrO2 delafossite has more strength than AgFeO2 delafossite
Summary
Oxygen cations and ions vibration at different frequencies.[21] The elastic constants estimated from the FTIR analysis have a great interest due to their help in understanding the thermal properties of the samples.[21] Industrialists need to study different properties in detail for different materials to be able to choose the right materials for the right applications. The novelty of the present work is the illustration of the elastic properties estimated from FTIR analysis, as well as the optical properties of AgFeO2 and AgCrO2 delafossite. To the authors’ knowledge, this is the first time that the elastic properties from FTIR analysis and high-frequency applications for the investigated samples have been explained. The starting ingredients were silver, iron III, or chromium III nitrates They were mixed in stoichiometric ratios after adding a small amount of distilled water. The optical properties were measured using a Jasco-V-570 spectrophotometer (Japan)
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