Synthesis, Structural, Electric and Magnetic Properties of nano Crystalline NiFeAg thin films for MEMS Applications

Authors

  • I. Jeena Rajathy, R. Kannan, S. Ananthic, T. S. Senthil

Abstract

The NiFeAg thin films were synthesized by electrodeposition process on copper substrate at a constant current density of 1 A/dm2 for 30 minutes of electroplating time. The NiFeAg thin films have been coated on the substrate by varying the electrolytic bath temperature from 30°C to 80°C and the pH value of prepared electrolyte was kept in between 7 - 8. Structural analysis of electrodeposited NiFeAg thin films has been explored by EDAX, SEM and XRD techniques. The X-ray diffraction analysis pattern reveals that NiFeAg coated thin films exhibit the FCC crystal structure and the average crystalline size was in the range of 31 to 64 nm. The crystalline size of NiFeAg thin films coated at 80°C were found to be 31.42 nm. The Scanning Electron Microscope pictures of coated thin film reveals that electrodeposited NiFeAg thin films have uniform surface morphology while increasing the temperature. The magnetic properties were studied using Vibrating Sample Magnetometer analysis. The NiFeAg film coated at higher bath temperature exhibit the better soft magnetic nature with lower coercivity of 133.4 G and higher saturation magnetization of 22.139 x 10-3 emu/cm3. I-V characteristic analysis of coated NiFeAg thin film says that the current value is increased by increasing the voltage. The coated NiFeAg thin film may be used for Micro Electro Mechanical System (MEMS) applications due to its better magnetic properties.

Keywords- Electrodeposition, NiFeAg, nanocrystalline, coercivity and I-V characteristics.

Published

2020-12-11

Issue

Section

Articles