59Co Internal field NMR analysis of Co35Fe35Ni30 alloy synthesized via novel low cost chemical reduction technique

We have synthesized ternary cobalt alloy using a chemical reduction process using hydrazine as a reducing agent . X-Ray Diffraction (XRD) measurements shows that the synthesized cobalt ternary alloy exists in the pure face centred cubic (fcc) phase with lattice parameter of 3.5562 +/- 5 angstrom. The SEM micrograph shows that the particles exist in the spherical shape which suggests that the particles are crystallized in fcc phase. The magnetic properties are determined using Vibrating Sample Magnetometry (VSM) and Co-59 IFNMR technique. The saturation magnetization (M-s) of the synthesized sample is similar to 80 emu/g, a slightly lower value compared to the pure cobalt metal. 59 Co IFNMR technique shows that there is a broad distribution of hyperfine field (similar to 6 T) compared to the pure fcc cobalt metal. Further, from the deconvoluted NMR peaks suggests that the variation in the nearest neighbours to the central cobalt atom leads to the different hyperfine field.

Automated summary

Ternary cobalt alloy was synthesized using a chemical reduction process with hydrazine, showing pure fcc phase with spherical particles. Magnetic properties slightly lower than pure cobalt metal were observed through VSM and Co-59 IFNMR techniques, with broad distribution of hyperfine field indicated by 59Co IFNMR.