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.

引用

页数：13

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