Dielectric study of <scp>CoFe<sub>2</sub>O<sub>4</sub></scp>/<scp>MWCNT</scp>/epoxy nanocomposites: Effect of temperature, concentration and irradiation
Shivali Meena, Neelam Kumari, Supratim Mitra, Rahul Singhal, Sarika Verma, Ravi Kant Choubey, Umesh Kumar Dwivedi
Abstract
Abstract In this work, dielectric behavior of CoFe 2 O 4 /MWCNT/epoxy nanocomposites affected by concentration, temperature and Au ion irradiation is reported. The CoFe 2 O 4 nanoparticles are synthesized via co‐precipitation technique. The samples of CoFe 2 O 4 /MWCNT/epoxy nanocomposites are prepared by varying ferrite contents (upto 50 phr). After that, the dielectric behavior is evaluated using LCR meter. The results exhibited that the dielectric constant of CoFe 2 O 4 /MWCNT/epoxy nanocomposites increases with increased ferrite content. The effect of temperature on dielectric of CoFe 2 O 4 /MWCNT/epoxy nanocomposites is observed at 27–100°C. The dielectric constant of prepared nanocomposites is gradually enhanced with elevation in temperature up to a certain value then decreased due to accumulation of charges at interfaces. Furthermore, reduced dielectric behavior of prepared nanocomposites can be seen on the account of ion irradiation effect.