Synthesis of novel multi-ferroic ferrites and control of their magnetoelectric properties

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420714
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: University of Hyogo
• Principal Investigator: KIKUCHI TAKEYUKI 兵庫県立大学, 工学(系)研究科(研究院), 准教授 (50316048)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 機能性セラミックス / マルチフェロイクス / ヘキサフェライト

Outline of Final Research Achievements

Polycrystalline powder samples of Al-substituted (Ba, Sr)- Co system Y-type hexaferrite and Sr-Co system Z-type hexaferrite were prepared by the polymerizable complex method from two different raw materials of iron: iron chloride and iron nitrate. Morphology of prepared hexaferrites were observed with scanning electron microscope. The shape of powder prepared from iron chloride is plate-like with high aspect ratio suitable for crystallographic orientation by mechanical powder pressing. Moreover, polycrystalline powder samples of Zn-substituted Z-type hexaferrite were prepared by the polymerizable complex method. Their Mössbauer spectra were taken at room temperature with conventional constant-acceleration spectrometer. Obtained Mössbauer spectra were numerically separated into six distinguishable components. The relationship between Mössbauer parameters and magnetic properties has been discussed.

Free Research Field

無機固体化学