Crystallographic data for pure crystalline silver ferrite

Synthesis and characterization of nano silver ferrite composite

“…The nano silver ferrite powders are observed to be rich ruby red colored thin platelets. Microscopic and SEM observation of the platelets revealed that some of them are six sided though the true symmetry is rhombohedral [9] as characterized by XRD.…”

“…Both silver and ferrites meet these requirements but are not yet synthesized in the nanoform. However the formation of bulk silver ferrite was reported by Croft et al [9]. For the first time we report here the synthesis, characterization and magnetic studies of nano silver ferrite composite.…”

Comparing silver and copper as promoters in Fe-based Fischer–Tropsch catalysts using delafossite as a model compound

“…Delafossite silver ferrite may exist in two distinctly different crystalline phases, viz. rhombohedral 3R-AgFeO 2 (R 3m) and hexagonal 2H-AgFeO 2 (P6 3 /mmc) [36][37][38]40,41]. The broadness of the diffraction peaks obtained with this sample (see Supplementary material) only allowed a semi-quantitative evaluation of the two phases present.…”

“…An excess of iron was used to ensure incorporation of all silver in the delafossite phase [37]. The mixture was refluxed at 70°C for 6 h. The precipitate was washed 6 times with 250 ml of de-ionized water and dried at 120°C for 16 h. After washing and drying, the precipitate was calcined in air (30 ml(NTP)/(min g)) at 400°C (heating rate of 10°C/min) for 8 h. A relatively low calcination temperature was chosen, since silver ferrite decomposes in air to metallic silver and hematite at temperatures above 700°C [38].…”

The crystal structure of a new hexagonal phase of AgFeO2

“…~-AgFeO2 was prepared from Ag20 and ferric oxide or hydroxide in NaOH solution under hydrothermal conditions (Krause, Ernst, Gawrych & Kockay, 1936;Feitknecht & Moser, 1960). It is rhombohedral with the cell dimensions a,s,=6.427 A and c~ = 27022 ' (in the hexagonal description, a = 3.041 and c=18.55 A) (Croft, Tombs & England, 1964). According to Gessner (1968), fl-AgFeO2 was prepared by fusing fl-NaFeO2 in AgNOa melt.…”