Structural, thermal, and novel magnetic characteristics of e-beam irradiated PANI/Bi2Te3 composites for tunable applications

Abstract

Recently, there has been a growing interest in synthesizing new materials with unique physical properties. PANI/Bi 2 Te 3 composites have attracted considerable attention due to the distinctive characteristics of the conductive polymer and semiconductor material. PANI/Bi 2 Te 3 composites were prepared and irradiated with 100 KGy electrons from the electron beam accelerator. After the exposure to the radiation and increasing Bi 2 Te 3 concentration, XRD shows an increase in the unit cell volume and the inter-chain distances where the grains were decreased. Besides TEM, SEM provided the topographic images and the nano-crystal size on the surface and showed the accumulation of the particles of the obtained materials. TGA demonstrates the degradation behavior compositions throughout the heating of the samples. Unexpected ferromagnetic behavior was achieved for the highest ratio of (PANI) 0.3 (Bi 2 Te 3 ) 0.7 , confirmed by VSM and ESR. The ferromagnetic behavior was achieved without introducing any magnetic dopants, making these materials applicable in the future in magnetism. • PANI/Bi 2 Te 3 nano-compositions were successfully achieved via the in-situ polymerization technique. • (PANI) 1−x (Bi 2 Te 3 ) x composites e xposure to 100 KGy irradiation dose from e-beam accelerator. • Structural, topographic, and promising ferromagnetic properties were tested for Bi 2 Te 3 /PANI compositions. • The degradation takes place for PANI/Bi 2 Te 3 compositions throughout the heating was demonstrated by (TGA) technique. • ESR identified the formation of polarons and bi-polarons. production with PANI concentration increase which enhances the charge carriers.