Abstract
Abstract The present study investigates the thermal characteristics of a nanoscale superconductor material. A thin-film of YBa 2 Cu 3 O 7 - x was deposited on a SrTiO 3 substrate by using a pulsed-laser deposition technique and characterized using an ultrafast laser system. In order to extract a thermal conductivity value, a numerical solution for a transient one-dimensional heat conduction equation was obtained using a finite-difference method. The curve-fit shows a value 1.2 W/mK, which is relatively lower than those of bulk materials. This research provides a material property of superconductor thin-film required for the thermal design of micro or nanodevices. Keywords: Ultrafast Laser Metrology, Thermal Conductivity, Superconductor, Thin-Film[Received: August 12, 2015, Revised: October 7, 2015, Accepted: October 12, 2015] 동의대학교 기계공학과, Department of Mechanical Engineering, Dong-eui University, Busan 614-714, Korea (E-mail: ykim@deu.ac.kr) ⓒ 2015, Korean Society for Nondestructive Testing
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