Investigating phase and magnetic properties in Co-2 wt.% MWCNT nano-composites prepared by mechanical alloying

Abstract

MWCNT nano-composites with a cobalt content of 2 weight percent were created by mechanically alloying during different times. Modern techniques, including x-ray diffraction (XRD), differential thermal analysis (DTA), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and superconducting quantum interference device (SQUID), were used to examine the effects of CNT addition on the Co morphology and magnetic characteristics of the samples. It was shown that the characteristics of Co in 2 weight percent MWCNT nano-composites were retained in a sample that was milled for 60 min. Agglomerates of nanoparticles were the end result, with CNTs evenly distributed throughout the cobalt matrix 60 min after mechanical alloying. Analysis of magnetic hysteresis loops revealed that the inclusion of CNTs altered the magnetic characteristics of nano-composite samples. Analysis of magnetic hysteresis loops revealed that the inclusion of CNTs altered the magnetic characteristics of nano-composite samples. The well-developed interfacial structure in this work significantly improved the cobalt-MWCNT nano-composites’ magnetic characteristics.