Study on mechanism of anomalous behavior of localized magnetic moments in itinerant electronic ferromagnets

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18211
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: OHTA Hiroto 東京農工大学, 工学(系)研究科(研究院), 助教 (60546985)
• Research Collaborator: KATORI Hiroko (ARUGA Hiroko) 東京農工大学, 大学院工学研究院, 教授 ; WATANABE Yusuke ; SUZUKI Atsushi ; KATO Yusuke
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 金属物性 / 強相関電子系 / 強相関エレクトロニクス / 磁性

Outline of Final Research Achievements

We found an anomalous behavior of localized magnetic moments in itinerant electronic ferromagnets, and have tried to clarify the mechanism of it. As results, we found that localized magnetic moments couple with internal field from ferromagnetic sublattice, leading to the anomalous temperature and magnetic field dependences of them. Such a coupling can be seen as the coupling of ferromagnetic moments with localized magnetic moments, and this viewpoint indicates a possibility to control ferromagnetic moments through controlling localized magnetic moments which couple with ferromagnetic moments. We found that the ferromagnetic-antiferromagnetic transition observed in layered ferromagnetic compounds can be understood by this mechanism.

Free Research Field

固体物理