Room-temperature multiferroic properties in 1.5LaFeO3-Bi4Ti3O12 thin films

被引：3
作者：
Feng, Linyan [1 ,2 ]
Su, Jie [3 ]
Lu, Chaojing [1 ,2 ]
Li, Jin [1 ,2 ]
Luo, Li [1 ,2 ]
Liang, Kaili [1 ,2 ]
Yin, Hongmei [4 ]
Huang, Yineng [4 ]
机构：
[1] Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266071, Peoples R China
[3] Qingdao Univ, Sch Elect & Informat Engn, Qingdao 266071, Peoples R China
[4] Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Lab Phase Transit & Microstruct Condense, Yining 835000, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2018年 / 29卷 / 02期
基金：
中国博士后科学基金; 美国国家科学基金会;
关键词：
FERROELECTRIC PROPERTIES; HYSTERESIS DISPERSION; SUBSTITUTED BI4TI3O12; CERAMICS; SRBI2TA2O9; PEROVSKITE; SYSTEMS;
D O I：
10.1007/s10854-017-8055-3
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Random-oriented 1.5LaFeO(3)-Bi4Ti3O12 thin films were fabricated on (111)Pt/Ti/SiO2/Si(100) substrates by a sol-gel method. Both X-ray diffraction and Raman spectroscopy characterizations confirm that the films have a single-phase Aurivillius structure with 4-5 successive perovskite blocks. The films exhibit room-temperature multiferroic properties with the remanent polarization 2P(r) similar to 27.20 mu C/cm(2) and saturated magnetization M-s similar to 4.28 emu/cm(3). Moreover, room-temperature magneto-dielectric effect with magneto-dielectric coefficient of similar to 1.03% was observed, which arises from the charge ordering of Fe2+ and Fe3+. Theoretical analysis of temperature-dependent dielectric spectrum and X-ray photoelectron spectroscopy data reveals a major contribution of charge ordering of Fe2+ and Fe3+ to the magneto-dielectric effect in 1.5LaFeO(3)-Bi4Ti3O12 thin films.
引用
收藏
页码：1473 / 1478
页数：6
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