The Effect of Zinc Doped Bismuth Ferrite on Changes in Structural and Microwave Absorption Properties through the Sol Gel Synthesis Method

Microwave Absorption Properties on Zinc doped Bismuth Ferrite Nanocrystalline by Sol-gel Method

Abstract

The zinc (Zn) doped bismuth ferrite (BiFeO₃) have been successfully synthesized through the sol-gel autocombustion method as a microwave absorbent material through a composite process with silicone rubber. The characterizations of zinc doped bismuth ferrite nanoparticles was done using the X-Ray Diffraction (XRD), the Fourier Transform Infrared (FTIR), the Vibration Sample Magnetometer (VSM), and the Vector Network Analyzer (VNA). Through the XRD test, the nanoparticle BiFe_1-xZn_xO₃ (x = 0, 0.06, 012) have a crystal structure of rhombohedral R3c. Through the FTIR test, it were observed that the area of ​​wave number 491 - 569 cm^-1 were used as an absorber for BiFeO₃, while the one in zinc doped BiFeO₃ were observed to be 489 - 636 cm^-1. The VSM test shows that the BiFe_1-xZn_xO₃ nanoparticles (x = 0, 0.06, 012) have ferromagnetic properties and potentially change to paramagnetic properties with the addition of zinc doping. The VNA test were obtained, bismuth ferrite without doping has a reflection loss (RL) of -25.79 dB with a narrower frequency range and bismuth ferrite with zinc doping (%wt x = 0.12) has a RL of -30.02 dB with a wider frequency range so that zinc doped BiFeO₃ potentially to be a good absorbent material.