Title :
Giant M-E effect of multiferroic BaTiO3-LaMnO3 ceramic composites
Author :
Ban, K. ; Shundo, T. ; Nishimura, N. ; Gomi, M.
Author_Institution :
Dept. of Mater. Sci. & Eng., Nagoya Inst. of Technol., Japan
Abstract :
The electric field-induced magnetization change in BaTiO3-LaMnO3 composites was demonstrated. The origin of the observed large effect of the applied electric field on the magnetization was discussed. The magnetic properties were obtained by vibrating sample magnetometer and superconducting quantum interference device. Also the dielectric properties were evaluated by temperature dependence of dielectric constant measured at 10 KHz using an impedance analyzer. It was found out that the sintered composites exhibited both ferromagnetic and ferroelectric properties together with a reduction of spontaneous magnetization at room temperature. The reduction was ascribed to the decreased electron transfer interaction induced by electrostriction.
Keywords :
barium compounds; composite materials; electrostriction; ferroelectric ceramics; ferromagnetic materials; lanthanum compounds; magnetisation; magnetoelectric effects; permittivity; sintering; 10 kHz; 293 GK to 298 K; BaTiO3-LaMnO3; dielectric constant; dielectric properties; electric field-induced magnetization; electron transfer interaction; electrostriction.; ferroelectric properties; ferromagnetic properties; impedance analyzer; magnetic properties; multiferroic ceramic composites; room temperature; sintering; spontaneous magnetization; superconducting quantum interference device; vibrating sample magnetometer; Dielectric constant; Dielectric measurements; Impedance measurement; Interference; Magnetic field measurement; Magnetic properties; Magnetization; SQUID magnetometers; Superconducting devices; Temperature dependence;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464335
