[11p-N301-1~8] Diversification of piezoelectrics - From sensors and actuators to 5G and IoT technologies -

[11p-N301-8] Structure and Properties of k-Al₂O₃-type Structured Multiferroic Thin Film

〇Shintaro YASUI^1,2 (1.Tokyo Tech., ZC, 2.Tokyo Tech., MSL)

Keywords:Ferroelectricity, Ferrimagnetism, Multiferroics

We will discuss about k-Al₂O₃-type structured multiferroic thin films. k-Al₂O₃-type structured materials belongs Pna2₁ space group with polar structure, and can be written by sesqui-oxide(A₂O₃). There are three oxygen octahedra(6-coodination) and one tetrahedron(4-coodination) in the unit cell. The direction of oxygen closed packing is along c-axis in crystal. It is known that k-Al₂O₃-type structured materials shows ferroelectricity and ferrimagnetism. We will explane structure and properties of prepared thin films.