Characterization and magnetic properties of electrospun Co1−x Zn x Fe2O4 nanofibers

Chromium-ruthenium oxide solid solution electrocatalyst for highly efficient oxygen evolution reaction in acidic media

“…Although the shift of the a parameter shows the same trend as the c parameter when the Ru content increases, there is a deviation for the a parameter according to the Vegard’s law. This deviation was possibly due to the little difference of a parameter between RuO 2 ( a = 4.499 Å) and CrO 2 ( a = 4.421 Å), and/or the existence of some defects in the lattice along the a axis 41,42 . It is noteworthy that there is a pre-oxidation peak of the solid solution samples, which can be ascribed to the pre-oxidation of Cr.…”

Microstructure and magnetic properties of electrospun one-dimensional Al3+-substituted SrFe12O19 nanofibers

“…Among these factors, the particle size and substitution ion are undoubtedly the two most important as the SrAl xFe 12 À x O 19 nanofiber grain sizes (37-65 nm) are within the critical single-domain size around 60 nm for the strontium ferrite reported by Lin et al [30] and Kulkarni et al [31], as the coercivity will decrease with the particle size reduction when the particle size is within the critical size of single-domain [32]. But, one finds that although the grain size for the SrAl x Fe 12 À x O 19 nanofibers exhibits a decrease with the Al 3 + ion content increase (Fig.…”

Synthesis and characterization of cobalt-free Ba0.5Sr0.5Fe0.8Cu0.2O3−δ perovskite oxide cathode nanofibers

“…Therefore, finding new methods is necessary for IT-SOFCs to overcome the problems of cost effectiveness and inefficient use of time. In recent years, the application of one-dimensional nanostructures, including nanowires and nanofibers, as cathode materials in IT-SOFCs has been the subject of intense research due to the reduction of device dimensions, potential nanomaterial properties due to the re-arrangement at the molecular level, and high surface areas [18][19][20]. There are a variety of methods for the synthesis of these nanostructures, such as laser ablation, chemical vapor deposition, solution deposition, and micro pulling method, but all these methods have the major disadvantages of being complicated, requiring significant time and high costs [21][22][23].…”