Study of magnetic instability for functional materials controled by magnetic field

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560855
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Kagoshima University
• Principal Investigator: FUJII Shinpei 鹿児島大学, 理工学研究科, 教授 (90189994)
• Co-Investigator(Kenkyū-buntansha): KOYAMA Keiichi 鹿児島大学, 大学院理工学研究科, 教授 (70302205)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 磁気秩序秩序一次転移 / 第一原理計算 / 強磁場

Outline of Final Research Achievements

For Mn2Sb, we have investigated theoretically and experimentally whether antiferromagnetic-ferrimagnetic first-order transition occurs and whether the magnetic transition is suppressed by (a high) magnetic field or pressure (Kinetic Arrest (KA) effect). Study of stabilization of antiferromagnetism is also done. It has been found that the magnetic transition occurs for the system that Cr or Co or Cu is substituted for Mn and the one that Ge or Sn or Bi is substituted for Sb. The KA effect is observed for the former and not for the latter. The obtained result shows the possibility that the KA effect is induced by a turbulence of the magnetic sublattice　and/or by a change of an atomic environment of the magnetic atom.

Free Research Field

計算物理、物性物理