Probing the dielectric, piezoelectric and magnetic behavior of CoFe2O4/BNT-BT0.08 composite thin film fabricated by sol-gel and spin-coating methods

被引：12
作者：
Cernea, Marin [1 ]
Vasile, Bogdan Stefan [2 ]
Surdu, Vasile Adrian [2 ]
Trusca, Roxana [2 ]
Bartha, Cristina [1 ]
Craciun, Floriana [3 ]
Galassi, Carmen [4 ]
机构：
[1] Natl Inst Mat Phys, POB MG-7, Bucharest 077125, Romania
[2] Univ Politehn Bucuresti, Bucharest 060042, Romania
[3] CNR, ISM, Area Ric Tor Vergata, I-00133 Rome, Italy
[4] CNR, ISTEC, Via Granarolo 64, I-48018 Faenza, Italy
来源：
SCIENTIFIC REPORTS | 2018年 / 8卷
关键词：
LEAD-FREE; ELECTRICAL-PROPERTIES; PHASE;
D O I：
10.1038/s41598-018-36232-3
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We investigated in this paper a novel bilayer composite obtained by sol-gel and spin coating of the ferroelectric 0.92Na(0.5)Bi(0.5)TiO(3)-0.08BaTiO(3) (abbreviated as BNT-BT0.08) and ferromagnetic CoFe2O4 phases, for miniature low-frequency magnetic sensors and piezoelectric sensors. This heterostructure, deposited on Si-Pt substrate (Si-Pt/CoFe2O4/BNT-BT0.08), was characterized using selected method such as: X-ray diffraction, dielectric spectroscopy, piezoelectric force microscopy, SQUID magnetometry, atomic force microscopy/magnetic force microscopy, and advanced methods of transmission electron microscopy. CoFe2O4/BNT-BT0.08 ferromagnetic-piezoelectric thin films show good magnetization, dielectric constant and piezoelectric response. The results of analyses and measurements reveal that this heterostructure can have applications in high-performance magnetoelectric devices at room temperature.
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页数：13
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