Synthesization and characterization of dual properties of nickel zinc ferrite for magnetorheological materials

Abstract

The main objective of this study was to synthesize nickel zinc ferrite, NiZnFe₂O₄ particles which are believed can exhibit great dual properties of magnetic and electrical conductivity. Magnetorheological (MR) materials are one of the smart materials which respond toward the external magnetic field. Carbonyl iron particles (CIP) are commonly used as magnetic particles in MR materials as they can actively react to the applied magnetic fields. However, CIP is passive towards the electrical properties. Therefore, the synthesization of NiZnFe₂O₄ particles via sol-gel method was introduced to improve this limitation at sintering temperature of 1000°C. The particle characteristic analysis of NiZnFe₂O₄ were performed and determined via X-Ray Diffraction (XRD) for its elemental composition, Vibrating Sample Magnetometer (VSM) for magnetic properties, conductivity test using multimeter and Field Emission Scanning Microscope (FESEM) for morphological characterization and structure.