Control of magnetic anisotropies of layered compounds by crystallo-chemistry for fabrication of magnetically aligned ceramics

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550236
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic industrial materials
• Research Institution: Kyoto University (2013-2014); Kochi University of Technology (2012)
• Principal Investigator: HORII SHIGERU 京都大学, エネルギー科学研究科, 准教授 (80323533)
• Co-Investigator(Renkei-kenkyūsha): SHIMOYAMA Jun-ichi 東京大学, 大学院工学系研究科, 准教授 (20251366)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 磁場配向 / 層状酸化物 / 希土類

Outline of Final Research Achievements

In order to show effectiveness of a tri-axial magnetic alignment technique as a material production process, a manipulation technique of tri-axial magnetic anisotropies and magnetization axes in layered functional oxide materials with orthorhombic crystal structure, such as high-Tc superconductors and thermoelectric materials could be found. Modulation structure and twin microstructure decrease the magnetic anisotropy in a grain level, whereas doping of heavy-rare-earth ions such as Ho, Dy, and Er and crystallochemical control in a molecular level can improve the magnetic anisotropy in the grain level. This research project can find a crystallochemical strategy for the control of tri-axial magnetic anisotropies of the layered oxide materials in the grain level.

Free Research Field

磁場配向