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- Title
Effect of Pr Substitution on Structural and Magnetic Properties of CoFeO Spinel Ferrite Nanoparticles.
- Authors
Yadav, Raghvendra; Havlica, Jaromir; Kuřitka, Ivo; Kozakova, Zuzana; Masilko, Jiri; Hajdúchová, Miroslava; Enev, Vojtěch; Wasserbauer, Jaromir
- Abstract
In this paper, CoFePrO ( x = 0.00 to 0.1 in step of 0.025) nanoparticles were synthesized by starch-assisted sol-gel auto-combustion method. Powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Raman spectroscopy, infrared spectroscopy and vibrating sample magnetometer (VSM) were employed to characterize these synthesized CoFePrO nanoparticles. The structural phase purity, crystallite size, and lattice parameter of synthesized CoFePrO ferrite nanoparticles were estimated from X-ray diffraction studies. XRD patterns reveal the formation of cubic spinel ferrite with the signature of PrFeO phase at higher Pr concentration. FE-SEM images endorse that the synthesized nanoparticles are of spherical morphology with size in the range of 5-20 nm. Raman and Fourier transform infrared (FTIR) spectra support the formation of the spinel Co-Fe-Pr ferrite structure in the nanocrystalline form. Room temperature magnetic measurement shows increase in saturation magnetization and coercivity, from 13.96 emu g ( x = 0.0) to 19.34 emu g (x = 0.075) and 52.30 Oe ( x = 0.0) to 546.94 Oe ( x = 0.075), respectively, in CoFePrO nanoparticles synthesized by starch-assisted sol-gel auto-combustion method
- Subjects
PRASEODYMIUM; COBALT compounds; MAGNETIC properties of transition metal compounds; CRYSTAL structure; NANOPARTICLE synthesis; SOL-gel processes; RAMAN spectroscopy; EFFECT of temperature on metals
- Publication
Journal of Superconductivity & Novel Magnetism, 2015, Vol 28, Issue 1, p241
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-014-2849-9