Free volume and medium range structure analyses of amorphous alloys

• Project/Area Number: 23560836
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Okayama University
• Principal Investigator: ITOH Keiji 岡山大学, 教育学研究科(研究院), 准教授 (80324713)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2013: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
• Keywords: 非晶質合金 / 金属ガラス / 原子構造 / 中性子回折 / ガラス構造 / 非晶質 / 中性子 / 構造 / X線回折

Research Abstract

In this work, neutron diffraction and reverse Monte Carlo (RMC) simulation were performed on Ni-Zr amorphous alloys and its deuteride. Obtained structural models were analyzed in detail. These atomic configurations were divided into fundamental structural units, in order to investigate how the short and medium range structures are formed by a connection of these units. Moreover, the possibility of the quantitative analysis of free volume was examined.