Effect of the degree of doping on the size and magnetic properties of nanocrystals La1 – x Zn x FeO3 synthesized by the sol–gel method

Structural and magnetic properties of YFe(1-x)CoxO3 (0.1<x<0.5) perovskite nanomaterials synthesized by coprecipitation method

“…Besides, Co substitution also led to a change in Fe-O-Fe angles, as well as an oxidation of a small amount of Fe 3+ ions to Fe 4+ ions to compensate the charge caused by the appearance of Co 2+ at the sites of Fe 3+ . Similar results were mentioned by other authors [16,17,20]. Noticeably, with x ≥ 0.2, YFeO 3 changed gradually from a soft magnetic material (H c < 100 Oe) to a hard magnetic material with high coercive force (Hc 100 Oe, especially with x = 0.5).…”

“…As a result, the optimal conditions were difficult to be determined, and the formation of impurity phases such as Fe [12,13] might have a negative impact on the quality of the obtained materials. In our previous research [14][15][16], the perovskite nanomaterials were successfully synthesized by co-precipitation method via the hydrolysis of transition metal ions in boiling water. This paper presents the results of the structural and magnetic properties of Co-doped YFeO 3 nanomaterials prepared by co-precipitation method via the hydrolysis of Y(III), Fe(III) and Co(II) cations in boiling water using 5 % aqueous KOH solution as a precipitating agent.…”

Co-Doped NdFeO3 Nanoparticles: Synthesis, Optical, and Magnetic Properties Study

“…The determination of the average crystallite size by the calculation method according to the Debye–Scherrer formula leads to significant errors that can be caused by the choice of a mathematical model for analyzing the X-ray line profile for the determination of the particle size and the influence of various factors on the broadening effect of diffraction maxima. In addition, the diffraction method is volumetric and therefore determines the size of crystallites averaged over the entire volume, in contrast to electron microscopy, which is a local visual method for estimating the size of particles (not crystallites) [ 25 ]. TEM results, to a certain extent, depend on the possibility of investigating only a relatively small number of particles under real conditions and on the quality of preliminary dispersion of nanopowders, which introduces a certain amount of uncertainty into the obtained results.…”

Optical and magnetic properties of orthoferrite NdFeO3 nanomaterials synthesized by simple co-precipitation method

“…The characteristic structure and properties of nanomaterials in general, and RFeO 3 rare-earth orthoferrite nanomaterials in particular, depend on several different factors such as particle size and morphology, crystal size, the distribution of the cations in the crystal lattice, the content of doping elements and also the preparation method [1][2][3][4][5]. Nano-sized rare earth orthoferrites RFeO 3 (R = La, Y, Nd, Pr, Ho, ...) have been studied and applied in many fields such as photocatalysis for the decomposition of toxic organic waste [6][7], electrodes for solid oxide fuel cells [8], gas sensor materials [9], photomagnetic and electromagnetic devices [10][11], etc. The rare earth orthoferrites NdFeO 3 is amongst the materials of interest to research.…”