Magnetic and electric properties of the c-axis-oriented orthorhombic LuFeO3 thin film

• Main Authors: Liou, Jing-Ting, 劉進廷
• Other Authors: Juang, Jenh-Yih
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/96188909421362545162

碩士 === 國立交通大學 === 電子物理系所 === 103 === Orthorhombic ferrites (o-RFeO3, R=Sm,Dy,Lu) are known to be ferroelectric because of the polar structure, which is of the same origin of the ferroelectricity exhibited in SmFeO3. Moreover, a weak ferromagnetic ordering induced ferroelectric polarization has been found in LuFeO3 recently. However, the research of LuFeO3 in the thin film form is lacking, which is desirable to in order to harvest the magnetically induced polarization anticipated for application. In this thesis, we will present the preparation and properties of orthorhombic rare earth multiferroic LuFeO3 thin films. Briefly, sintered ceramic pellet of LuFeO3 was prepared by solid-state reaction and used as the target for the subsequent pulsed laser deposition. LuFeO3 thin films grown on various substrates were characterized by x-ray diffraction (XRD), atomic force microscope (AFM). Moreover, the temperature dependences magnetization (M-T) measurements, dielectric constant (r’-T), dielectric loss (tanδ-T), and conductivity (σa.c.-T) will be presented and discussed.