講者:任盛源 先生
題目:Magneto-mechanical property of Galfenol alloy in a bulk or thin-film form
演講人:任盛源 先生
服務單位:中研院物理所/研究員
演講題目:Magneto-mechanical property of Galfenol alloy in a bulk or thin-film form
演講時間:106年6月5日(星期一) 早上10點10分
演講地點:工綜館B03教室
個人學經歷
學歷:
美國卡內基美倫大學(Carnegie-Mellon Univ.) 物理系 博士
美國卡內基美倫大學(Carnegie-Mellon Univ.) 物理系 碩士
國立臺灣大學 物理系 學士
經歷:
中央研究院 / 物理所 / 研究員(現職)
國立臺灣科技大學 / 機械系 / 教授
國立臺灣海洋大學 / 光電系 / 教授
演講摘要:
Ferromagnetic Galfenol alloy is known to be a magnetostrictive material, which can find many applications as the core material in a sensor, damper, or actuator device.In this talk, I shall first introduce the experimental measuring methods on the magneto-mechanical (or magneto-elastic) properties, such as magnetostriction (λ), Young's modulus(E), shear modulus (G), and/or damping capacity (ΔW/W) as a function of external magnetic field (H), respectively, of several kinds of Galfenol samples in a bulk or thin-film form.Second, I would like to discuss the relationship between the structural and magneto-mechanical properties of the alloy: based on the X-ray, TEM, MTG, DSC, and neutron scattering analyses.Third, I shall mention a few theoretical equations often used in studying the magneto-mechanical properties of a ferromagnetic metal.Finally, I like to compare the experimental results from this work with the theoretical predictions.