Influence of Elastic and Optical Properties on AgFeO2 and AgCrO2 Delafossite to be Applied in High-Frequency Applications

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.

Fascinating study of elastic, FTIR, and antimicrobial properties of silver nanochromite at different annealing temperatures

“…In addition to this, the values of Poisson's ratio (σ) remain constant by increasing the annealing temperature of the investigated samples (σ = 0.25), and they are in good agreement with the theory of isotropic elasticity, which had a range that went from − 1 to 0.5 [38]. Finally, studying the mechanical properties of Ag 0.5 Cr 2.5 O 4 nanoparticles with the ratio of Ag/Cr (1:5) gave more elastic behavior than that of previous work with a ratio of Ag/Cr (1:1) [21]. Moreover, by increasing the annealing temperature of the investigated samples to 900 °C, an enhancement happened in the mechanical properties, especially in the elasticity of the nanosample.…”

“…It is reported from our previous work that silver chromite with the chemical formula Ag 2 Cr 2 O 4 nanoparticles with the ratio of Ag/Cr ion (1:1) at room temperature is stronger than Ag 2 Fe 2 O 4 nanoparticles with the ratio of Ag/Fe ion (1:1) [20]. Also, when comparing silver chromite with different chemical formulas AgCrO 2 with the ratio of Ag/Cr ion (1:1) at room temperature gave high strength than AgFeO 2 with the ratio of Ag/Fe ion (1:1) [21]. This indicates that chromium ions possess more elasticity than iron ions, which could be used in various applications.…”

“…The authors also studied the mechanical properties of the investigated material with increasing temperature. Thus, the authors study the mechanical properties of silver chromite by increasing the chromite concentration (Cr 2.5 ) at the expense of decreasing silver ion concentration (Ag 0.5 ) with the ratio of Ag/Cr ion (1:5) compared with previous work (Ag 2 Cr 2 O 4 and AgCrO 2 ) with the ratio of Ag/Cr (1:1) [20,21]. Moreover, the authors studied the effect of the investigated samples with various temperatures, and they found that by increasing the annealing temperature, the elasticity of the nanosample increased.…”

Attractive study of the antimicrobial, antiviral, and cytotoxic activity of novel synthesized silver chromite nanocomposites

“…Nanoparticles existed on Earth and man life. It can be manufactured biologically, anthropogenically, and geologically in erosion, volcanoes, fires of forests, burning of charcoal, and industry [ 12 ]. Moreover, nanoparticles can be prepared by different methods such as the solid-state method and wet methods [ 13 – 17 ].…”

Impact of different magnetic materials added to silver–magnetite nanoparticles on the structural, magnetic and antimicrobial properties

“…Spinel nanoferrites with structure formula AB 2 O 4 , where A is a divalent metal ion (such as cobalt and copper) and B is a trivalent metal ion (such as iron), are used as magnetic materials that can be applied in many applications [ 1 , 2 ]. Nanoparticle materials are prepared by various solid-state and wet methods [ 3 , 4 ]. Wet methods such as the sol–gel, co-precipitation, citrate, flash, and oxalate are the most effective and well known.…”