Control of magnetic multipole domains using anisotropic physical responses

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K03853
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
• Research Institution: Nihon University
• Principal Investigator: ABE Nobuyuki 日本大学, 文理学部, 准教授 (70582005)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: マルチフェロイクス / 方向二色性 / 奇パリティ磁気多極子秩序

Outline of Final Research Achievements

In this study, we focused on the odd-parity magnetic multipolar order as the origin of new physical property responses associated with the breaking of both space inversion symmetry and time reversal symmetry, and performed experiments to detect the new physical properties as macroscopic physical property responses. To achieve this, we have studied visualization of odd-parity magnetic multipolar domains and domain control using anisotropic physical response. Main achievements are listed below. 1. Multiferroic response is newly discovered in several materials such as Ba3Fe2O5Cl2. 2. It has been discovered that large directional dichroism in MnTiO3 and organic-inorganic hybrid perovskites.

Free Research Field

固体物性

Academic Significance and Societal Importance of the Research Achievements

本研究の成果の中でも特にアキラルな構造を持つ反強磁性体であるMnTiO3における方向二色性の発見は、これまでの研究指針よりも広範囲の物質に適応できる可能性があり、今後の方向二色性を示す物質の新しい探索指針になることが期待される。