151Eu and 57Fe Mössbauer study of mechanically alloyed EuFeO3

Structural, thermal, 57Fe and 151Eu Mössbauer studies of Eu2O3–Fe2O3 ceramic nanostructures

“…The sextets correspond to Eu-doped hematite and the small doublet suggests the presence of very fine hematite particles in the system. It should be noted that the europium orthoferrite phase is associated with a doublet in [6], but a sextet or both a sextet and a doublet in [5], depending on the procedure of system preparation [16][17][18][19][20][21][22]. The spectrum in Fig.…”

“…In addition europium oxide is an intriguing compound that can serve as a precursor for obtaining the EuFeO 3 perovskite, which is an orthoferrite with multiple technological applications such as solid oxide fuel cells, catalysts, electrodes, chemical sensors, gasoline detectors, magneto-optical devices and microwave guides [5]. It has been demonstrated [6] that the physico-chemical properties of these compounds can be changed by the procedure of their preparation, which ranges from solid state reaction to chemical co-precipitation and mechanical alloying.…”

Low temperature 151Eu and 57Fe Mössbauer study of mechanically alloyed EuFeO3

“…This is a well known method commonly referred to as mechanical alloying [13]. Sample obtained after such process was found to be pure EuFeO 3 from XRD measurements [11].…”

“…The morphology and structural evolution of mechanically alloyed EuFeO 3 as a function of milling period was investigated using XRD, SEM, and room temperature 57 Fe and 151 Eu Mössbauer spectroscopy in transmission geometry in our previous work [11]. This work will focus on low temperature Mössbauer measurements at both the rare-earth and transition metal sites.…”

“…Mössbauer spectroscopy is best suited to study ferrite oxides and in particular EuFeO 3 since this is one of the rare cases where both the rare-earth and transition metal sites can be probed. To our knowledge there are only two such studies so far and both were carried out at room temperature only [11,12]. This work is the first to…”