PENGARUH PENAMBAHAN MULTIWALLED KARBON NANOTUBE PADA SIFAT MAGNET BAHAN KOMPOSIT Fe0,8-C0,2[Effect of Magnetic Properties in the Addition of Multiwalled Carbon Nanotube to Material Composite Fe0,8- C0,2]

Abstract

Characterization of magnetic properties has been carried out to the Fe0,8-C0,2 after addition of 1% MWNT and varying the milling time. Fe0,8-C0,2 MWNT has been created through a process of milling using ball milling technique and with a weight rasio of ball and sample of 5:1 for 30 minutes, 4.5 hours, 25 hours and 50 hours of milling time. The magnetic properties of Fe0,8-C0,2 MWNT powder were characterized by VSM (vibrating sample magnetometer), the crystalline structure was characterized by X-ray diffraction technique and the electrical properties was measured by the LCR meter. The results of measurements of magnetic properties by VSM show that the magnetic properties: saturation magnetization (Ms), remanent magnetization (Mr) and coercive strong magnetic field (Hc) decreased with the addition of milling time. The results of the XRD showed that the diffraction pattern of MWNT has higher intensity than in the FeC after addition of MWNT. The results of measurement of electrical properties with LCR meter showed a conductance increasing with the increasing of milling time, except at 25 hours milled sample. The addition of MWNT no effect on the crystal structure of the composite Fe0,8-C0,2.