Development of new magnetic materials based on self-organization

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656416
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Tohoku University (2013-2014); Kyushu Institute of Technology (2012)
• Principal Investigator: OHTANI Hiroshi 東北大学, 多元物質科学研究所, 教授 (70176923)
• Co-Investigator(Kenkyū-buntansha): IIKUBO Satoshi 九州工業大学, 生命体工学研究科, 准教授 (40414594)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 構造・機能材料 / 磁性材料 / 自己組織化 / 組織制御 / 第一原理計算

Outline of Final Research Achievements

A long-period stacking ordered (LPSO) structure often formed in Mg-based alloys is characterized by the periodical arrangement of stacking fault introduced on the hcp matrix and additive atoms segregate in the stacking fault layers. Therefore the LPSO structure has synchronized structural and compositional modulations. Because the LPSO structure might possibly play a key role in fabricating new magnetic materials or superconducting magnets, a precise understanding of LPSO structure formation is so important. Therefore in the present study the formation mechanism of LPSO structure was investigated from a viewpoint of structural and compositional modulation. Based on the criteria, some candidate alloys were produced to check the physical properties.

Free Research Field

材料工学