The study of the ferroelectric properties of lithium-titanium ferrite

International Scientific Conference on "Radiation-Thermal Effects and Processes in Inorganic Materials"

材料科学;物理学

Malyshev, A.V.^1 ; Nikolaev, E.V.^1 ; Surzhikov, A.P.^1 ; Zarubin, A.N.^2

National Research Tomsk Polytechnic University, Tomsk, Russia^1

National Research Tomsk State University, Tomsk, Russia^2

关键词: Dielectric hysteresis;    Electric field strength;    Electric polarization;    Ferroelectric property;    Heating and cooling;    Maxwell-Wagner relaxation;    Temperature evolution;    Thermal barkhausen effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/81/1/012010/pdf
DOI  :  10.1088/1757-899X/81/1/012010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Loop-shaped dependences of the electric polarization on the electric field strength (the dielectric hysteresis) are registered for the first time for polycrystalline Li-Ti ferrite. Temperature evolution of the hysteresis loop parameters is investigated for ferrite samples. A thermal Barkhausen effect is detected during heating and cooling of ferrite specimens prepolarized in an electric field. The results obtained can be interpreted from the viewpoint of the Maxwell-Wagner relaxation polarization or induced ferroelectric-like state in the electric ferrite subsystem.