Enhanced magnetoelectric coupling in La-modified Bi5Co0.5Fe0.5Ti3O15 multiferroic ceramics

被引：18

作者：

Liu, Sheng ^{[1
]}

Yan, Shuoqing ^{[1
]}

Luo, Heng ^{[1
]}

Yao, Lingling ^{[1
]}

Hu, Zhaowen ^{[1
]}

Huang, Shengxiang ^{[1
]}

Deng, Lianwen ^{[1
]}

机构：

[1] Cent S Univ, Inst Super Microstruct & Ultrafast Proc Adv Mat, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2018年 / 53卷 / 02期

关键词：

BISMUTH TITANATE; TEMPERATURE; POLARIZATION; PHYSICS;

D O I：

10.1007/s10853-017-1604-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multiferroic properties of La-modified four-layered perovskite Bi5-x La (x) Fe0.5Co0.5Ti3O15 (0 ae<currency> x ae<currency> 1) ceramics were investigated, by analyzing the magnetodielectric effect, magneto-polarization response and magnetoelectric conversion. X-ray diffraction indicated the formation of pure Aurivillius ceramics, and Raman spectroscopy revealed the Bi ions displacement and the crystal structure variation. The enhancement of ferromagnetic and ferroelectric properties was observed in Bi5-x La (x) Fe0.5Co0.5Ti3O15 after La modification. The evidence for enhanced ME coupling was determined by magnetic field-induced marked variations in the dielectric constant and polarization. A maximum ME coefficient of 1.15 mV/cm center dot Oe was achieved in Bi4.25La0.75Fe0.5Co0.5Ti3O15 ceramic, which provides the possible promise for novel magnetoelectric device application.

引用

页码：1014 / 1023

页数：10

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