Effect of low-concentration gadolinium doping on the thermal properties of MWCNT composites.

Rashad G.  Abaszade; E.M. Aliyev; A.G. Mammadov; E.A. Khanmamadova; A.A. Guliyev; F.G. Aliyev; F.G. Abaszadeh; T.O. Margitych; E. Gür; M.O. Stetsenko

doi:10.3952/physics.2025.65.3.3

Rashad G. Abaszade
E.M. Aliyev
A.G. Mammadov
E.A. Khanmamadova
A.A. Guliyev
F.G. Aliyev
F.G. Abaszadeh
T.O. Margitych
E. Gür
M.O. Stetsenko

DOI: https://doi.org/10.3952/physics.2025.65.3.3

Keywords: carbon nanotubes, gadolinium, TEM, TGA, specific heat capacity

Abstract

In this study, the thermal properties of multiwalled carbon nanotubes doped with 5 wt% gadolinium were analyzed. Thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) and transmission electron microscopy were successfully employed for material characterization. Transformations in the TGA profiles of the synthesized carbon-based nanocomposite were investigated. The specific heat capacity value of that nanocomposite was attributed to the influence of Gd doping. For gadolinium-doped MWCNTs, a Cp value of 826.4 J/(kg·K) was observed at 630.4 K. These findings highlight the potential of rare-earth-doped carbon nanomaterials for use in thermal interface materials and other heat management applications in advanced electronics and energy systems.