Title:Morphological Controlled Synthesis of FeCo Nanoparticles and Their Magnetic Properties
Volume: 17
Issue: 6
Author(s): Prathap Kopplu, Rambabu Kuchi, Dongsoo Kim, Venkata Basaveswara Rao Mandava*, Jong-Ryul Jeong*Tentu N. Rao
Affiliation:
- Department of Chemistry, Krishna University, Machilipatnam 521001,India
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134,Korea
Keywords:
FeCo nanoparticles, chemical reduction process, polyethylene glycol [PEG 200], cubes, high magnetization, biosensors,
drug delivery.
Abstract:
Objective: Controlled morphological FeCo nanoparticles with different Fe/Co ratios were
prepared by a surfactant-free modified chemical reduction process in the water medium.
Methods: Polyethylene glycol PEG 200 was used to protect from areal oxidation of FeCo alloy, and
a mixture of hydrazine, sodium hydroxide was served as the reducing system in this process.
Results: It was found that the shape of FeCo nanoparticles varied from flakes to cubes according to
the atomic ratio of the metal precursors. X-ray diffraction (XRD) data showed that the prepared samples
with different compositions got a single-phase body-centered–cubic structured FeCo alloy.
Scanning Electron Microscopy (SEM) and transmission electron microscopy (TEM) confirmed all
sample's atomic ratios and sizes (FeCo cubes with a size of ~130 nm).
Conclusion: The vibrating Sample Magnetometer (VSM) measurements reveal that the Fe60Co40 had
the highest magnetization of 208 emu/g among all samples.