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R. KANNAN1,* , S. GANESAN2
In the present investigation electrodeposited Ni-Fe-W-S nano crystalline thin films were prepared in tri potassium citrate bath at bath temperature of 40˚C. Annealing of the electro deposited thin film was performed at 200˚ C temperature for one hour. X-ray diffraction technique (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDAX), Vickers Hardness Test (VHN), Vibrating Sample Magnetometer (VSM) were utilized to study the as-deposited and annealing effects on the structural and magnetic properties of the film. X-ray diffraction (XRD) result indicated that the as-deposited film had crystalline size of 31 nm. Annealing treatment of the coatings produced the enhanced crystalline size of 29 nm. Due to the improvement of soft magnetic properties in the 200˚C annealed film, the saturation magnetization is enhanced by 0.1623 emu/ cm2 (coercivity decreased to 83 Gauss) compared with the case of as-deposited film at bath temperature of 40˚C. Hardness of the annealed film increased from 195 VHN to 202 VHN. This shows that the soft magnetic properties of Ni-Fe-W-S thin films are greatly enhanced by annealing at 200˚C which can be used in MEMS applications..
Tri potassium citrate, Coercivity, Annealing treatment, Soft magnetic properties.
R. KANNAN, S. GANESAN, Enhancement of magnetic properties on annealed Ni-Fe-W-S electrodeposited thin films for MEMS applications, Optoelectronics and Advanced Materials - Rapid Communications, 8, 3-4, March-April 2014, pp.274-281 (2014).
Submitted at: Nov. 1, 2013
Accepted at: March 13, 2014
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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