Ying Chieh Lee

Ying Chieh Lee

National Pingtung University of Science & Technology, Taiwan



Biography

Ying Chieh Lee has completed his PhD from Department of Materials Science and Engineering, National Chung Hsing University. He is a Professor in Department of Materials Engineering, National Pingtung University of Science and Technology. He has published more than 70 papers in reputed journals and has been serving as coatings editorial board member of repute.

Abstract

Ni-Cr-Mn-Y-Cu resistive thin films were prepared on glass and Al2O3 substrates by DC magnetron co-sputtering from targets of Ni-Cr-Mn-Y casting alloy and Cu metals. Electrical properties and microstructures of Ni-Cr-Mn-Y-Cu films under different proportion of elements and annealing temperatures were investigated. The phase evolution, microstructural and composition of Ni-Cr-Mn-Y-Cu resistive films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Auger Electron Spectroscopy (AES). When the annealing temperature was set to 350°C, the Ni-Cr-Mn-Y-Cu films with an amorphous structure were observed. The Ni-Cr-Mn-Y films with 6.4% Cu addition annealed at 300°C which was exhibited the resistivity 770 mW-cm with +15 ppm/°C of temperature coefficient of resistance (TCR).