The Effect of Tapioca and Polyethylenglycol Template on Barium Hexaferite Magnet Particle Morphology

• Main Author: BAGUS CHRISTIANTO (NIM : 13311037); KELVIN WONGSO (NIM : 13311086); Pembimbing: Prof. Dr. Ir. , KEVIN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20239
• Institution: Institut Teknologi Bandung

Permanent magnet is the main component in a power plant. Barium hexaferrite is a permanent magnet that currently being developed. Barium hexaferrite has higher coercivity than other permanent magnets, has high Curie temperature, and good chemical stability. Barium hexaferrite will have a better magnetic property if it has a structure of rod-shaped particles (nanorod), because it is easier to direct the magnetic moment of particles. In this experiment, barium heksaferit magnet was synthesized by sol-gel method with chitosan as a dispersant. Tapioca and polyethyleneglycol (PEG) were used as a template to obtain rod-shaped particles. <br /> <br /> <br /> Experiments were conducted by variation of volume ratio dispersant to template 2:1 and 1:2 with chitosan addition % was 10% (v/v) precursor solution. Moreover, the experiments also conducted with volume ratio dispersant to template 2:1 with chitosan addition % was 20%(v/v) precursor solution. Scanning Electron Microscopy demontrated that magnetic particles with rods, hexagonal, needle, and granule morphologies were formed. The PEG template produced a better rod <br /> <br /> <br /> morphology in comparison with tapioca, but the difference is not significant. Magnetically, tapioca template generate magnetic particle better than PEG with <br /> <br /> <br /> the highest coercivity value 0.36 T and the highest remanence value 37.4 emu / g. So, it can be concluded that tapioca is able to replace PEG as template.