Size dependent structural and magnetic behaviour of CaFe2O4

Phase controlled synthesis of (Mg, Ca, Ba)-ferrite magnetic nanoparticles with high uniformity

“…It indicates that the Mr, Ms, and SQR values are strongly associated with the crystallite size and particle size as well as the dispersion of MgFe 2 O 4 nanoparticles. similar result is also obtained by Samariya et al [8] The change of Ms is attributed to the frozen disordered spins at the surface. [8] Such a relationship may also suggest the reduction of CaCO 3 volumes as the sintering temperature increases [ Fig.…”

“…similar result is also obtained by Samariya et al [8] The change of Ms is attributed to the frozen disordered spins at the surface. [8] Such a relationship may also suggest the reduction of CaCO 3 volumes as the sintering temperature increases [ Fig. 6A at room temperature.…”

“…[5][6][7] In general, the orthorhombic CaFe 2 O 4 nanoparticle is superparamagnetic at room temperature. [8] However, orthorhombic BaFe 2 O 4 reveals weak ferromagnetism at room temperature. [9] Over the past years, the homougeneous (Mg, Ca, Ba)-ferrite with fine grains were prepared with various technologies, such as solid state reaction, [10] chemical synthesis, [11] mechanochemical route, [6] micelle and reverse micelle method [12] and co-precipitation technique [13] etc.…”

Superparamagnetic calcium ferrite nanoparticles synthesized using a simple sol-gel method for targeted drug delivery

“…[1,2]. In addition, CaFe 2 O 4 shows remarkable physical characteristics, such as high thermal stability, which makes it applicable over a wide temperature range [3].…”

Dehydration-rehydration induced structural changes in pristine and composite layered double hydroxides

“…Here, the sharp lines correspond primarily to the well-crystallised Ca2FeO4 spinel, but the presence of other compositions (e.g., Ca2Fe2O5) can also be detected [115,116]. Furthermore, the proportion of each spinel phase can be deduced from the 57 Fe Mössbauer spectra.…”